REPAIRING / SERVICING TV SUPRA STV-LC1522WD

Technical description and composition of the SUPRA STV-LC1522WD TV, panel type and modules used. The composition of the modules.
SUPRA
Model: STV-LC1522WD
Chassis / Version: SP208ESA HK-SP7050V28
Panel: 15 inch
Inverter (backlight): LK-150205
PWM Inverter: ME4946, TL494
MOSFET Inverter: 2907, 2222
Power Supply (PSU): Adapter 12V
MainBoard: SP208ESA HK-SP7050V28
IC MainBoard: FSP3131, TDA9885, EN25T80, PI5V330, SPV7050, TDA1517
Tuner: TNF931D-BFR1
STV-LC1522WD Specifications
SUPRA STV-LC1522WD
General recommendations for TV LCD repair
SUPRA TV made on chassis HK-7050A-V2.08-E (SP208ESA), like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. Often, based on external signs and the nature of damage to elements, it becomes possible to draw some conclusions and determine a further algorithm for searching for a defect before taking the necessary measurements at control points. In some cases, defective elements can be seen with the naked eye, for example, charred resistors or swollen sintered capacitors, or electrolytic ones in rectifier filters. The formed ring cracks in the soldering of the terminals of transformers or heating circuit elements are also frequent sources of many malfunctions with a variety of external manifestations.
If the power supply module fails, external manifestations may be different, for example, SUPRA STV-LC2222WD does not turn on at all and there is no indication of the control lamps on the front panel. With the same symptoms, the regulator (converter) of the control processor power supply may be faulty. The first step is to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse in the power supply is broken, in most cases a breakdown of the power switch (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. You should also check the diodes of the rectifier bridge and the electrolytic capacitor of the mains rectifier filter.
Mos-Fet switches used in switching power supplies (SMPS) rarely fail without reasons that must be looked for by checking other circuit elements. Breakdown is often caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or breakdown of resistors in stabilization circuits. The PWM controller microcircuit can also cause the breakdown of the power switch of the converter.
In cases where the SUPRA STV-LC2222WD TV has lost the image, but there is sound and all other functions are operational, there is a possibility of a malfunction of the inverter (converter for powering the backlight lamps). When you turn on the TV, the image may appear briefly and immediately disappear. It should be borne in mind that with such manifestations, the lamps themselves fail, the malfunction of which can be detected by replacing, connecting for diagnostics to the connectors that are known to be serviceable and suitable in power.
In most cases, the diagnostics and repair of the inverter is difficult due to the organization of protection, which turns it off in emergency cases in order to avoid fires when short circuits or breaks in high-voltage circuits and when lamps are depressurized. Repairers often block the protection circuits in order to make the necessary measurements at the control points of the inverter to identify the causes of the defect.

 The SUPRA STV-LC1522WD has no picture when a signal is present, often caused by a malfunction of the display backlight. Moreover, the problem can be both inside the LCD panel (matrix) 15 inches, for example, a malfunction of the CCFL (EEFL) lamps, and outside in their power source - the inverter.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.

Often, to repair the backlight, disassembly of the LCD panel 15 is required - a painstaking process that requires increased attention and accuracy from the master. In such cases, there is a possibility, with the slightest negligence, to damage the glass or loops and the TV may become unrepairable.
We strongly do not recommend doing such work to owners of TVs and craftsmen who do not have experience in repairing LCD panels! Moreover, at home (at the owner's home).

If there is no image in the presence of backlight, the screen becomes slightly lighter when turned on, and if the TV is open, the light from the lamps can be seen through the holes in the panel case.
In this case, there may be a malfunction inside the panel, damage to strips, loops, the T-CON board (Timing Controller) may be defective. But often the MainBoard SP208ESA main board also turns out to be faulty, a software failure is also possible.

In such cases, the master first of all needs to check the main supply voltage of the panel at the LVDS connector, the fuses on the T-CON board or the panel brackets, as well as the supply and reference voltages for the line and column drivers - VGH, VGL, Vcom.


If all of the above measurements are within the normal range, then the oscilloscope needs to track the passage of LVDS signals from the MainBoard SP208ESA, as well as synchronization signals from T-CON to loops with drivers.

When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or microcircuit power converters and, if necessary, update the software (software). Repair of the board and replacement of microcircuits SPV7050, CT3257A, EN25T80, AT24C32, TDA9885TS, YD1517P are performed with the necessary equipment and the corresponding element base. Malfunctions associated with the use of BGA soldering technologies can be localized by the warm-up method.

Once again, we remind TV users: do not try to repair yourself without the appropriate knowledge, experience and the necessary qualifications! Entrust repairs only to professionals with sufficient experience in the field of electronic repair ......

DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    SP208ESA, CPU: SPV7050


DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    SUPRA STV-LC1522WD, STV-LC1922WD, STV-LC2222WD. MAIN  CVMV26L-A-20



DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC1522WD, Main: SP208ESA HK-SP7050V28, Panel: 15 INCHES

 The appearance of the MainBoard SP208ESA is shown in the figure below:
SP208ESA
SP208ESA can be used in TVs:
SUPRA STV-LC1522WD (Panel 15 inches), SUPRA STV-LC1922WD (Panel MP185GW01 V.2), SUPRA STV-LC2222W (Panel CLAA215FA01 (M)), SUPRA STV-LC2222WD (Panel CLAA215FA01).
External view of the power supply
Main features of SUPRA STV-LC1522WD device:
Installed matrix (LCD panel) 15 inches.
The LK-150205 inverter is used to power the backlight lamps, it is controlled by the ME4946, TL494 PWM controller. Switches of type 2907, 2222 are used as power elements of the inverter.
To power all internal components of the SUPRA STV-LC1522WD TV, an external adapter 12V is used.
MainBoard - the main board (motherboard) is a SP208ESA module, using FSP3131, TDA9885, EN25T80, PI5V330, SPV7050, TDA1517 and others.
The TNF931D-BFR1 tuner provides reception of television programs and tuning to channels.



LCD TV SUPRA STV-LC1522WD with LCD, 15 "diagonal, 16: 9 format. Screen brightness of 250 cd / m² is provided by CCFL (EEFL) fluorescent lamps. Contrast - ratio of maximum brightness to minimum brightness is 500: 1. Dynamic contrast ratio of 1000: 1 is achieved by special control of the backlight.It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in a graphic resolution of 720p (HD Ready) .Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping takes place in 480i, 480p, 576i, 576p, 720p, 1080i standards Supported multimedia file formats: MP3, VideoCD, SVCD, JPEG.
The power of the sound system of 6 W (2x3 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, S-Video, SCART, RGB, VGA, HDMI, USB. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768.
The power consumed by the TV in operating mode from the mains is 36 W.
Overall dimensions: 406x340x160 mm.
TV weight: 5.8 kg.
Attention! The SUPRA STV-LC1522WD LCD TV panel is its most expensive component.

Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!

REPAIRING / SERVICING TV SUPRA STV-LC1617W

Technical description and composition of the SUPRA STV-LC1617W TV, panel type and modules used. The composition of the modules.
SUPRA
Model: STV-LC1617W
Chassis / Version: CVMV26L-A
Panel: LM156WH (TL) (E1)
Lamp backlight: 2 Lamp CCFL
Inverter (backlight): LK-IN190201-001 CQC04001011196
Power Supply (PSU): LK1048-005C
MainBoard: CVMV26L-A
IC MainBoard: CPU: TSUMV26KE-LF, SPI FLASH: F40-100GCP, EEPROM: K24C32, Sound: TDA1517P
Tuner: F21WT-3BAR-E
Control: IR: 15A-24A15-IR-V1.2
STV-LC1617W Specifications
SUPRA STV-LC1617W
General recommendations for TV LCD repair
Possible manifestations of malfunctions
- TV SUPRA STV-LC1617W does not turn on and does not show any signs of operation at all. No response to the remote control and front panel control buttons.
In such cases, the fault should be looked for first of all in the LK1048-005C power module. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches and rectifier diodes for possible partial or complete breakdown.
In case of diode breakdowns in the secondary circuits, the converter can operate in an emergency mode of short circuit without output voltages, and with a short circuit in the power elements of the primary circuit, the mains fuse and / or the current sensor in the source of the key usually breaks off.
Breakdown of power switches (MosFet) in switching sources is sometimes caused by malfunctions of other circuit elements, for example, in the circuits supplying the PWM controller, frequency setting or damper, as well as in the circuits of Negative Feedback (OOS) stabilization. PWM controllers (PWM), if they do not have visible damage to the case and an outright short circuit between the terminals, are usually checked by replacement.
- There is no picture, but there is sound and reaction to commands from the remote control. Or the image appears immediately after switching on and disappears.

These manifestations can be triggered by the power module, or by defects in the inverter, as well as by skewed currents in the lamps due to their uneven wear. If all the electrolytic capacitors of the filter for the power supply of the inverter are in good working order, you should make sure that the lamps are in good condition, then you need to check the keys of the converter and the secondary windings of the transformers.

Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protective circuits must be restored immediately after the repair is completed.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals the standby mode.

 The SUPRA STV-LC1617W has no picture when there is a signal, and it is often caused by a malfunction of the display backlight. Moreover, the problem can be both inside the LCD panel (matrix) TMS156WX1-02TC, for example, a malfunction of CCFL (EEFL) lamps, and outside in their power source - an inverter.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.

Often, to repair the backlight, disassembly of the TMS156WX1-02TC LCD panel is required - a painstaking process that requires increased attention and accuracy from the master. In such cases, there is a possibility, with the slightest negligence, to damage the glass or loops and the TV may become unrepairable.
We strongly do not recommend doing such work to owners of TVs and craftsmen who do not have experience in repairing LCD panels! Moreover, at home (at the owner's home).

If there is no image in the presence of backlight, the screen becomes slightly lighter when turned on, and if the TV is open, the light from the lamps can be seen through the holes in the panel case.
In this case, there may be a malfunction inside the panel, damage to strips, loops, the T-CON board (Timing Controller) may be defective. But the main board MainBoard CVMV26L-A often turns out to be faulty, a software failure is also possible.

In such cases, the master first of all needs to check the main supply voltage of the panel at the LVDS connector, the fuses on the T-CON board or the panel brackets, as well as the supply and reference voltages for the line and column drivers - VGH, VGL, Vcom.

If all of the above measurements are within the normal range, then the oscilloscope must track the passage of LVDS signals from the MainBoard CVMV26L-A, as well as synchronizing signals from T-CON to loops with drivers.

Repair or diagnostics of the CVMV26L-A motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Complicated MB (SSB) repair is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: TSUMV26KE-LF, SPI FLASH: F40-100GCP, EEPROM: K24C32, Sound: TDA1517P requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by the warm-up method.
Malfunction of the F21WT-3BAR-E tuner is established after checking the software and all supply voltages at its terminals. The I2C bus communication between the tuner and the processor can be monitored with an oscilloscope.

Attention! Users and owners of STV-LC1617W TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from attempting to repair themselves in order to avoid negative consequences that may lead to the complete non-repairability of the device.

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC1617W, Main: CVMV26L-A, Panel: LM156WH (TL)(E1)

 The appearance of the MainBoard CVMV26L-A is shown in the figure below:
CVMV26L-A
External view of the power supply
Main features of SUPRA STV-LC1617W device:
Installed matrix (LCD panel) LM156WH (TL) (E1).
The LK-IN190201-001 inverter is used to power the backlight lamps.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC1617W TV is carried out by the LK1048-005C power module, or its analogs.
MainBoard - the main board (motherboard) is a CVMV26L-A module, using CPU chips: TSUMV26KE-LF, SPI FLASH: F40-100GCP, EEPROM: K24C32, Sound: TDA1517P and others.
The F21WT-3BAR-E tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LM156WH1-TLE2
Type: a-Si TFT-LCD, Panel
Diagonal size: 15.6 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 344.232x193.536 mm
Brightness: 200 cd / m²
Contrast Ratio: 950: 1
Display Colors:, CIE1931 60%
Lamp Type: CCFL
Signal Interface: LVDS (1 ch, 8-bit)
LCD TV SUPRA STV-LC1617W with LCD TMS156WX1-02TC, 16 "(41 cm) diagonal 16: 9. Brightness of the screen 250 cd / m² provided by backlighting CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio 2000: 1 achieved by special control of the backlight.It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in the standard graphic decomposition of 720p (HD Ready) .Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital formation signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
The power of the sound system of 6 W (2x3 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, S-Video, SCART, VGA, HDMI. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
The power consumed by the TV in operating mode from the network is 45 watts.
Dimensions: With stand 392x318x145 mm, Without stand 392x279x70 mm.
TV weight: 3.5 kg.
Attention! SUPRA STV-LC1617W LCD TV panel TMS156WX1-02TC is its most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!

REPAIRING / SERVICING TV SUPRA STV-LC1904W

Technical description and composition of the SUPRA STV-LC1904W TV, panel type and modules used. The composition of the modules.
SUPRA
Model: STV-LC1904W
Chassis / Version: JUG7.820.510-2
Panel: HT190WG1-600
T-CON: HT190WG1-100VE-X0.2 NT71672FG-00022 5411IREZ 7516Z
Inverter (backlight): FSP048-2PI04
PWM Inverter: MP1038EY MIP1038EY
Trans Inverter: SPI 8TC00321
Power Supply (PSU): FSP048-2PI04
PWM Power: STR-W6525
MainBoard: JUG7.820.510-2
IC MainBoard: MST718BE-LF, 24LC32, 4803A, CSC2314F, TEA2025B
Tuner: TAF6-C2I21VH 9511AF
STV-LC1904W Specifications
SUPRA STV-LC1904W
General recommendations for TV LCD repair
SUPRA with JUG7.820.510-2 chassis, like other TVs, it is advisable to start repairing with a careful examination of external and internal elements and modules. According to some external signs of a change in the state of some elements, it sometimes becomes possible to make assumptions about the nature of the defect, as well as to determine the further direction of troubleshooting. If ring cracks are found in the soldering of the terminals of the elements or broken connecting tracks, swollen capacitors or charred resistors - all this may be characteristic signs of the causes or consequences of an already known typical malfunction.

If the TV does not turn on, none of the indicators on its front panel will light or blink. Also, if the TV does not respond to the remote control and buttons, does not emit any sounds and any signs of operability when turned on, there is a certain probability that the FSP048-2PI04 power supply module is faulty and needs repair. Sometimes a problem with similar manifestations can occur only in the absence of processor power, which is typical for certain SUPRA models. The first step is to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse in the power supply is broken, in most cases a breakdown of the power switch (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. You should also check the diodes of the rectifier bridge and the electrolytic capacitor of the mains rectifier filter.
Power switches in switching power supplies (SMPS) fail for no reason very rarely and, in case of their breakdown, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors,

semiconductor devices and resistors in the primary circuit. The reason may be a malfunction of the STRW6525 PWM regulator microcircuit, which can only be checked by replacing it with a new or known good one.

If, when SUPRA STV-LC1904W is turned on, there is no image, or it appears for a second and disappears altogether, but there is sound, most likely either the backlight lamps or their power converter (inverter) are faulty. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the common power supply.
The operation of the power circuits of the inverter and the backlight lamps in the normal mode is controlled by special protection, which is organized for fire safety purposes, for example, to disconnect when short circuits or breaks in high-voltage connections or when lamps are depressurized. This protection makes it difficult to diagnose and repair the inverter.

 The SUPRA STV-LC1904W has no picture when there is a signal is often caused by a malfunction of the display backlight. Moreover, the problem can be both inside the LCD panel (matrix) HT190WG1-600, for example, a malfunction of the CCFL (EEFL) lamps, and outside in their power source - the inverter.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.
Often, repairing the backlight requires disassembling the HT190WG1-600 LCD panel - a painstaking process that requires special attention and accuracy from the master. In such cases, there is a possibility, with the slightest negligence, to damage the glass or loops and the TV may become unrepairable.

We strongly do not recommend doing such work to owners of TVs and craftsmen who do not have experience in repairing LCD panels! Moreover, at home (at the owner's home).

 
If there is no image in the presence of backlight, the screen becomes slightly lighter when turned on, and if the TV is open, the light from the lamps can be seen through the holes in the panel case.
In this case, there may be a malfunction inside the panel, damage to strips, loops, the T-CON board (Timing Controller) may be defective. But the main board MainBoard JUG7.820.510-2 often turns out to be faulty, a software failure is also possible.

In such cases, the master first of all needs to check the main supply voltage of the panel at the LVDS connector, the fuses on the T-CON board or the panel brackets, as well as the supply and reference voltages for the line and column drivers - VGH, VGL, Vcom.
If all of the above measurements are within the normal range, then the oscilloscope needs to track the passage of LVDS signals from the MainBoard JUG7.820.510-2, as well as synchronizing signals from T-CON to loops with drivers.

Repair or diagnostics of the JUG7.820.510-2 motherboard should begin with checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software). Repair of the board and replacement of microcircuits MST718BE-LF, 24LC32, 4803A, CSC2314F, TEA2025B are performed if the necessary equipment and the corresponding element base are available. Malfunctions associated with the use of BGA soldering technologies can be localized by the warm-up method.

Once again, we remind TV users: do not try to repair yourself without the appropriate knowledge, experience and the necessary qualifications! Entrust repairs only to professionals with sufficient experience in the field of electronic repair.

DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    JUG7.820.510-2 MST718BE


DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC1904W_25F40-100GCP

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC1904WD. Cpu: MST718BE-LF

Login to Service Menu LCD TV 15'-22 '', Main Board JUG7.820.510-2, percent MST718DU-LF
To identify the firmware and Main Board:
Turn on TV, Turn the volume down to "0" from the remote control or on the TV, Press "MUTE", Simultaneously press "MENU" on the remote control and on the TV.
The "Service Menu" will open, in which the firmware version will be indicated. In accordance with the firmware version and TV model, select Main Board, check the LCD name (the firmware is in the Main board name).

The appearance of the MainBoard JUG7.820.510-2 is shown in the figure below:

JUG7.820.510-2
JUG7.820.510-2 can be used in TVs:
SUPRA STV-LC1904W (Panel HT190WG1-600), SUPRA STV-LC2204W (Panel CLAA216WA01), SUPRA STV-LC1911WD (Panel HT190WG1-600).
External view of the power supply
Main features of SUPRA STV-LC1904W device:
Installed matrix (LCD panel) HT190WG1-600.
Matrix control uses Timing Controller (T-CON) HT190WG1-100VE-X0.2.
The FSP048-2PI04 inverter is used to power the backlight lamps, it is controlled by the MP1038EY MIP1038EY PWM controller. The transformer SPI 8TC00321 is installed in the inverter converter.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC1904W TV is carried out by the FSP048-2PI04 power module, or its analogs using STR-W6525 microcircuits.
MainBoard - the main board (motherboard) is a JUG7.820.510-2 module, using MST718BE-LF, 24LC32, 4803A, CSC2314F, TEA2025B and others.
The TAF6-C2I21VH 9511AF tuner provides reception of television programs and tuning to channels.
Information from an alternative source:
SUPRA STV-LC1904W
Panel type (matrix): HT190WG1-600,
Motherboard: JUG7.820.510-2, MST718BE-LF, 24LC32, 25X40AVNIG, 4803A, CSC2314F, TEA2025B, Tuner: TAF6-C2I21VH 9511AF
T-con: HT190WG1-100VE-X0.2, NT71672FG-00022, 5411IREZ, 7516Z
PSU & Invertor: FSP048-2PI04 P / N: 3BS0141212GP, STRW6525, MP1038EY, Tr-r: SPI 8TC00321,
Additional technical information about the panel:
Brand: BOE
Model: HT190WG1-600
Type: a-Si TFT-LCD, Panel
Diagonal size: 19.0 inch
Resolution: 1440x900, WXGA +
Display Mode: TN, Normally White, Transmissive
Active Area: 408.24x255.15 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V

LCD TV SUPRA STV-LC1904W with LCD HT190WG1-600, 19 "(48 cm) 16: 9. Brightness of the screen 300 cd / m² is provided by backlighting with CCFL (EEFL) fluorescent lamps. Contrast is the ratio of maximum brightness to the minimum is 1000: 1. It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready) .Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and formation digital signal occurs in the standards 480i, 480p, 576i, 576p.
The power of the acoustic system of sound 4 W (2x2 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, S-Video, component, VGA. A headphone output is provided. To connect a computer or laptop to this TV model, use the VGA (D-Sub 15) connector on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024.
The power consumed by the TV in operating mode from the mains is 60 W.
Overall dimensions: 522x455x145 mm.
TV weight: 7.5 kg.
Attention! SUPRA STV-LC1904W LCD TV panel HT190WG1-600 is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!

REPAIRING / SERVICING TV SUPRA STV-LC1910W

Technical description and composition of the SUPRA STV-LC1910W TV, panel type and modules used. The composition of the modules.
SUPRA
Model: STV-LC1910W
Chassis / Version: V1I12
Panel: HT185WX1-100
Inverter (backlight): IP32031 REV: 01
PWM Inverter: TL494
MOSFET Inverter: AO4516
Power Supply (PSU): IP32031 REV: 01
PWM Power: LD7575 (PWM flyback)
MOSFET Power: SVD4N65F
MainBoard: JUG7.820.510-5
IC MainBoard: CPU: MST718BE-LE, Flash: 25F40, EEprom: 24C32B
Tuner: TAF6-C2121VH
STV-LC1910W Specifications
SUPRA STV-LC1910W
General recommendations for TV LCD repair
Diagnostics of malfunctions and repair of SUPRA with V1I12 chassis, like other electronic devices, is recommended to begin with an external examination of external and internal elements. It often happens that visible damage to elements or connections helps determine the direction of troubleshooting. Experienced repairmen often guess about the causes of the defect and the possible consequences, for example, by ring cracks in the soldering of the element terminals, as well as by swollen capacitors or resistors burnt out to coal dust and other external indirect signs.
Sometimes the SUPRA STV-LC1910W TV just won't turn on. No control lamps on the front panel are on or blinking, the TV does not respond to the remote control and does not emit any sounds or any signs of life when turned on. The most likely cause of the failure is failure of the general power supply module IP32031 REV: 01. If it works, check the processor batteries on the SSB (Main Board). When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. If it breaks, the power elements of the SVD4N65F transistors and the rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (SMPS) it does not fail by itself without reasons that should be looked for by checking other elements of the primary circuit - electrolytic capacitors, PWM controller LD7575, which can be checked only by replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
Sometimes the SUPRA STV-LC1910W TV does not have a picture, but there is sound, or the picture appears and disappears immediately. In this case, there is a high probability of a malfunction of the backlight converter, or the lamps themselves, which can be checked by replacing. In such cases, it is necessary to make sure that all electrolytic capacitors of the filter are in good working order for the power supply of the inverter itself, including the power supply unit (power supply unit). It must be borne in mind that in the event of a disconnection of the inverter protection (for the purpose of diagnostics) there is a risk of failure of the power elements of the inverter and take special care. After carrying out repair work, the protection circuits must be restored for the further safe operation of the TV.
 The SUPRA STV-LC1910W has no picture when a signal is present, often caused by a malfunctioning display backlight. Moreover, the problem can be both inside the LCD-panel (matrix) HT185WX1-100, for example, a malfunction of CCFL (EEFL) lamps, and outside in their power source - an inverter.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.

Often, repairing the backlight requires disassembling the HT185WX1-100 LCD panel - a painstaking process that requires special attention and accuracy from the master. In such cases, there is a possibility, with the slightest negligence, to damage the glass or loops and the TV may become unrepairable.
We strongly do not recommend doing such work to owners of TVs and craftsmen who do not have experience in repairing LCD panels! Moreover, at home (at the owner's home).

If there is no image in the presence of backlight, the screen becomes slightly lighter when turned on, and if the TV is open, the light from the lamps can be seen through the holes in the panel case.
In this case, there may be a malfunction inside the panel, damage to strips, loops, the T-CON board (Timing Controller) may be defective. But often the main board MainBoard JUG7.820.510-5 also turns out to be faulty, a software failure is also possible.

In such cases, the master first of all needs to check the main supply voltage of the panel at the LVDS connector, the fuses on the T-CON board or the panel brackets, as well as the supply and reference voltages for the line and column drivers - VGH, VGL, Vcom.
If all of the above measurements are within the normal range, then the oscilloscope must track the passage of LVDS signals from MainBoard JUG7.820.510-5, as well as synchronizing signals from T-CON to loops with drivers.

Repair of the JUG7.820.510-5 motherboard must begin with diagnostics and testing of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM. In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - CPU: MST718BE-LE, Flash: 25F40, EEprom: 24C32B which may require replacement with new ones. If a BGA processor is installed, there is a possibility that the soldering of the contacts of its pins with the board is broken (detected by warming up).

We remind users again! Attempts to self-repair the SUPRA STV-LC1910W TV without the appropriate qualifications and experience can lead to its complete non-repairability!

DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    JUG7.820.510-2 MST718BE

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC1910W, Cpu: TSUMV26KU-LF, Flash: F40-100G, Tuner: TAF6-C2121VH 0406BB, Audio: YD1517P, Power: IC101 - LD7575, U2 - AO4516, IC1 - TL494

 The appearance of MainBoard JUG7.820.510-5 is shown in the figure below:
JUG7.820.510-5
JUG7.820.510-5 can be used in TVs:
SUPRA STV-LC1504W (Panel HT156WX1-100), SUPRA STV-LC1910W (Panel HT185WX1-100).
Main features of SUPRA STV-LC1910W device:
Installed matrix (LCD panel) HT185WX1-100.
To power the backlight lamps, an IP32031 inverter is used, controlled by a TL494 PWM controller. The keys of the AO4516 type are used as power elements of the inverter.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC1910W TV is carried out by the IP32031 power module, or its analogs using LD7575 microcircuits (PWM flyback) and power switches of the SVD4N65F type.
MainBoard - the main board (motherboard) is a JUG7.820.510-5 module, using CPU chips: MST718BE-LE, Flash: 25F40, EEprom: 24C32B and others.
The TAF6-C2121VH tuner provides reception of television programs and tuning to channels.
Information from an alternative source:
SUPRA STV-LC1910W Version V1I12
Panel type (matrix): HT185WX1-100
Motherboard: JUG7.820.510-5, MST718BE-LE, 25F40, 24C32B, Tuner: TAF6-C2121VH, PSU &
Invertor: IP32031 REV: 01, LD7575, SVD4N65F, AO4516, TL494
Additional technical information about the panel:
Brand: BOE
Model: HT185WX1-100
Type: a-Si TFT-LCD, Panel
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 2 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V

SUPRA STV-LC1910W LCD TV with HT185WX1-100 LCD, 19 "(48 cm) 16: 9 diagonal. Screen brightness of 300 cd / m² is provided by CCFL (EEFL) fluorescent lighting. Contrast is the ratio of maximum brightness to the minimum is 1000: 1. It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready) .Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and formation digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the acoustic system of sound 4 W (2x2 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, S-Video, component, VGA, HDMI. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768.
The power consumed by the TV in operating mode from the mains is 60 W.
Overall dimensions: 522x455x145 mm.
TV weight: 7.5 kg.
Attention! SUPRA STV-LC1910W LCD TV panel HT185WX1-100 is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!

REPAIRING / SERVICING TV SUPRA STV-LC1914WD

Technical description and composition of the SUPRA STV-LC1914WD TV, panel type and modules used. The composition of the modules.
SUPRA
Model: STV-LC1914WD
Chassis / Version: V2K11
Panel: HT185WX1-501
MainBoard: JUG7.820.699-4
IC MainBoard: CPU: TSUMV26KE-LF, SPI FLASH: GD25Q40, EEPROM: 24C32. DVD - CPU: MT1389DE (JDAL), SPI FLASH: EN25F16, Pick: SOH-DL6.
Tuner: CH TAF6-C2121VH 1913BP
STV-LC1914WD Specifications
SUPRA STV-LC1914WD
General recommendations for TV LCD repair
Repairing a SUPRA TV with a V2K11 chassis should begin with a fault diagnosis, which involves a careful examination of the external and internal elements of the device. Visible damage to elements can sometimes indicate the direction of searching for a defect even before the necessary measurements are taken. Elements with visible damage, for example, capacitors swollen after the electrolyte boils, charred resistors in certain nodes of the circuit, as well as ring cracks in the solders, will help the master guess about the causes and possible consequences of the malfunction.
If the power supply module fails, external manifestations may be different, for example, SUPRA STV-LC1914WD does not turn on at all and there is no indication of the control lamps on the front panel. With the same symptoms, the regulator (converter) of the control processor power supply may be faulty. In general, first of all, it is necessary to check the electrolytic capacitors of the filters of the secondary rectifiers and the fuse at the mains input. If it is cut off, then the diodes of the rectifier bridge and the key transistor of the converter, which can be located either on a separate radiator or integrated with a PWM controller into a common microcircuit, should be checked for PN-transitions breakdown. Options are possible.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur without reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as broken resistors or punctured semiconductor elements in the stabilization circuits. Possible defect of the PWM chip from the manufacturer.
In cases where the SUPRA STV-LC1914WD TV has lost the image, but there is sound and all other functions are operational, there is a possibility of a malfunction of the inverter (converter for powering the backlight lamps). When you turn on the TV, the image may appear briefly and immediately disappear. It should be borne in mind that with such manifestations, the lamps themselves fail, the malfunction of which can be detected by replacing, connecting for diagnostics to the connectors that are known to be serviceable and suitable in power. It must be borne in mind that in the event of a disconnection of the inverter protection (for the purpose of diagnostics) there is a risk of failure of the power elements of the inverter and take special care. After carrying out repair work, the protection circuits must be restored for the further safe operation of the TV.

 The SUPRA STV-LC1914WD has no picture when a signal is present, often caused by a malfunction of the display backlight. Moreover, the problem can be both inside the LCD panel (matrix) HT185WX1-501, for example, a malfunction of CCFL (EEFL) lamps, and outside in their power source - an inverter.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.
Often, repairing the backlight requires disassembling the HT185WX1-501 LCD panel - a painstaking process that requires special attention and accuracy from the master. In such cases, there is a possibility, with the slightest negligence, to damage the glass or loops and the TV may become unrepairable.
We strongly do not recommend doing such work to owners of TVs and craftsmen who do not have experience in repairing LCD panels! Moreover, at home (at the owner's home).
If there is no image in the presence of backlight, the screen becomes slightly lighter when turned on, and if the TV is open, the light from the lamps can be seen through the holes in the panel case.
In this case, there may be a malfunction inside the panel, damage to strips, loops, the T-CON board (Timing Controller) may be defective. But the main board MainBoard JUG7.820.699-4 often turns out to be faulty, a software failure is also possible.
In such cases, the master first of all needs to check the main supply voltage of the panel at the LVDS connector, the fuses on the T-CON board or the panel brackets, as well as the supply and reference voltages for the line and column drivers - VGH, VGL, Vcom.

If all of the above measurements are within the normal range, then the oscilloscope should track the passage of LVDS signals from MainBoard JUG7.820.699-4, as well as synchronizing signals from T-CON to loops with drivers.

In cases of an attempt to repair the JUG7.820.699-4 motherboard, it is necessary to check the performance of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating. Board repair and replacement of CPU chips: TSUMV26KE-LF, SPI FLASH: GD25Q40, EEPROM: 24C32. DVD - CPU: MT1389DE (JDAL), SPI FLASH: EN25F16, Pick: SOH-DL6. produced with the necessary equipment and the corresponding element base. Malfunctions associated with the use of BGA soldering technologies can be localized by the warm-up method.

Remember! Attempts to self-repair the SUPRA STV-LC1914WD TV by users without appropriate qualifications and the necessary experience can lead to serious negative consequences!

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC1914WD V2K11, Main JUG7.820.699-4, Panel: HT185WX1-501 


DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC1914W, Main JUG7.820.1145, CPU TSUMV26KE-LF, EEPROM K24C32B, FLASH 25Q40T, Sound TDA1517P, Tuner TAF6-C2121VH 1913BR

 In case of malfunctions in the SPI FLASH software manufactured by Winbond, sometimes they can temporarily restore their performance after temperature exposure, for example, warming up with a soldering station or a lighter. This is often enough to be able to read the standard software content. The microcircuit after that must be replaced with a new one.

Additional MainBoard Repair
The appearance of the MainBoard JUG7.820.699-4 is shown in the figure below:
JUG7.820.699-4
JUG7.820.699-4 can be used in TVs:
HYUNDAI H-LCD2418 (Panel M236MWF1), HYUNDAI H-LCD2218 (Panel M216H1-L01 Rev.C1), SUPRA STV-LC2214W (Panel LTA216AT01), SUPRA STV-LC1914WD (Panel HT185WX1-501), SUPRA STV-LC2214WD (Panel LTA216AT01), SUPRA STV-LC2414F (Panel M236MWF1), SUPRA STV-LC2414FD (Panel M236MWF1).
Main features of SUPRA STV-LC1914WD device:
Installed matrix (LCD panel) HT185WX1-501.
The required supply voltages for all nodes of the SUPRA STV-LC1914WD TV are provided by a switching power supply.
MainBoard - the main board (motherboard) is a JUG7.820.699-4 module, using CPU chips: TSUMV26KE-LF, SPI FLASH: GD25Q40, EEPROM: 24C32. DVD - CPU: MT1389DE (JDAL), SPI FLASH: EN25F16, Pick: SOH-DL6. and others.
Tuner CH TAF6-C2121VH 1913BP provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: BOE
Model: HT185WX1-501
Type: a-Si TFT-LCD, Panel
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 200 cd / m²
Contrast Ratio: 600: 1
Display Colors: 16.7M (6-bit + Hi-FRC)
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 2 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
LCD TV SUPRA STV-LC1914WD with LCD HT185WX1-501, 19 "(48 cm) 16: 9. Brightness of the screen of 300 cd / m² is provided by backlighting with CCFL (EEFL) fluorescent lamps. Contrast is the ratio of maximum brightness to a minimum of 1000: 1 Dynamic contrast ratio of 4000: 1 is achieved by a special control of the backlight.It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in a graphic resolution of 720p (HD Ready) .Input high-frequency or video signal is decoded in analog PAL, SECAM, NTSC systems Graphic processing and digital signal formation is performed in 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards Supported multimedia file formats: MP3, WMA, MPEG4, VideoCD, SVCD, JPEG.
The power of the acoustic system of sound 4 W (2x2 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, component, VGA, HDMI, USB. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768.
The power consumed by the TV in operating mode from the network is 48 watts.
Overall dimensions: 524x427x130 mm.
TV weight: 5.9 kg.
Attention! SUPRA STV-LC1914WD LCD TV panel HT185WX1-501 is the most expensive component.

Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!

REPAIRING / SERVICING TV SUPRA STV-LC1917W

Technical description and composition of the SUPRA STV-LC1917W TV, panel type and modules used. The composition of the modules.
SUPRA
Model: STV-LC1917W
Chassis / Version: V1K09
Panel: HE185WX1-100
MainBoard: CVMV26L-G
IC MainBoard: CPU: TSUMV26KE-LF, SPI FLASH: EN25F40
Tuner: F21WT-3BAR-E
Control: Login to the service: INPUT-VGA, INPUT 2580.
STV-LC1917W Specifications
SUPRA STV-LC1917W
General recommendations for TV LCD repair
It is advisable to start repairing all electronic devices, including the SUPRA TV based on the V1K09 chassis, with an external examination of its external and internal elements. According to some external signs of a change in the state of some elements, it sometimes becomes possible to make assumptions about the nature of the defect, as well as to determine the further direction of troubleshooting. Experienced repairmen often guess about the causes of the defect and the possible consequences, for example, by ring cracks in the soldering of the element terminals, as well as by swollen capacitors or resistors burnt out to coal dust and other external indirect signs.
Sometimes SUPRA STV-LC1917W TV just won't turn on. No control lamps on the front panel are on or blinking, the TV does not respond to the remote control and does not emit any sounds or any signs of life when turned on. The most likely cause of a malfunction is the failure of the common power module. If it works, check the processor batteries on the SSB (Main Board). Diagnostics and repair of the common power supply should always begin with checking the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the mains rectifier, as well as the large electrolytic capacitor of the mains rectifier filter.
It should be borne in mind that in the practice of repair, it is extremely rare for key transistors in switching power supplies (SMPS) to fail without reasons that should be looked for by checking other components, for example, a key breakdown can provoke faulty elements of damper circuits, or dried electrolytic capacitors or broken primary resistors power supply circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM regulator microcircuit are subject to verification, which it is advisable to check by replacement.
If SUPRA STV-LC1917W has no picture, but there is sound, there is a possibility of a malfunction of the backlight lamps or their power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are in good condition. All necessary precautions must be taken when disabling the inverter protection during diagnostics and do not leave it disabled after repair is completed.
On the CVMV26L-G motherboard, in case of a malfunction, you should first check the operability of all stabilizers or power converters of microcircuits and, if necessary, update the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - CPU: TSUMV26KE-LF, SPI FLASH: EN25F40 which may require replacement with new ones. If a BGA processor is installed, there is a possibility that the soldering of the contacts of its pins with the board is broken (detected by warming up).

 The SUPRA STV-LC1917W has no picture when there is a signal, it is often caused by a malfunction of the display backlight. Moreover, the problem can be both inside the LCD panel (matrix) HK185WLCM-BH01H, for example, a malfunction of CCFL (EEFL) lamps, and outside in their power source - an inverter.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.

Often, to repair the backlight, disassembly of the HK185WLCM-BH01H LCD panel is required - a painstaking process that requires increased attention and accuracy from the master. In such cases, there is a possibility, with the slightest negligence, to damage the glass or loops and the TV may become unrepairable.
We strongly do not recommend doing such work to owners of TVs and craftsmen who do not have experience in repairing LCD panels! Moreover, at home (at the owner's home).

If there is no image in the presence of backlight, the screen becomes slightly lighter when turned on, and if the TV is open, the light from the lamps can be seen through the holes in the panel case.
In this case, there may be a malfunction inside the panel, damage to strips, loops, the T-CON board (Timing Controller) may be defective. But the main board MainBoard CVMV26L-G often turns out to be faulty, a software failure is also possible.
In such cases, the master first of all needs to check the main supply voltage of the panel at the LVDS connector, the fuses on the T-CON board or the panel brackets, as well as the supply and reference voltages for the line and column drivers - VGH, VGL, Vcom.
If all of the above measurements are within the normal range, then the oscilloscope must track the passage of LVDS signals from the MainBoard CVMV26L-G, as well as synchronizing signals from T-CON to loops with drivers.

Owners and users of the SUPRA STV-LC1917W TV need to remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC1917W(V1K09), MAIN CVMV26L-G, PANEL HE185WX1-100

 The appearance of the MainBoard CVMV26L-G is shown in the figure below:
CVMV26L-G
The CVMV26L-G motherboard uses a TSUMV26KE-LF (TSUMV36KE-LF) processor, combined with a scaler, SPI FLASH 520Kb and EEPROM 24C02C.

It is advisable to start repairing the MainBoard with checking the voltage converters and linear stabilizers, which are necessary to provide power in operating and standby modes. Check the power supply of the LCD panel 5V or 12V, depending on the type of panel used, it is necessary to measure directly at the LVDS connector. If, with the necessary supply voltages, the TV does not come out of Stand-by mode, does not respond to the remote control and control buttons, you should update the SPI Flash software.

CVMV26L-G can be used in TVs:
FUSION FLTV-16W7 (Panel M156MWR1), FUSION FLTV-19W6D (Panel TM190MFS01), SUPRA STV-LC1917W (Panel HE185WX1-100), SUPRA STV-LC2417F STV-LC2417FD (Panel M236H1-P01).
Main features of SUPRA STV-LC1917W device:
Installed matrix (LCD panel) HE185WX1-100.
The necessary supply voltages for all nodes of the SUPRA STV-LC1917W TV are provided by a switching power supply.
MainBoard - the main board (motherboard) is a CVMV26L-G module, using CPU chips: TSUMV26KE-LF, SPI FLASH: EN25F40 and others.
The F21WT-3BAR-E tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: BOE
Model: HE185WX1-100
Type: a-Si TFT-LCD, CELL
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Transmissivity: 6.0% (with Polarizer)
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC)
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V



LCD TV SUPRA STV-LC1917W with LCD HK185WLCM-BH01H, 19 "(48 cm) 16: 9. Brightness of the screen 250 cd / m² backlit by CCFL (EEFL) fluorescent lamps. Dynamic contrast 4000: 1 achieved by special control of the backlight.It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in the standard graphic decomposition of 720p (HD Ready) .Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital formation signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
The power of the sound system of 6 W (2x3 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, S-Video, SCART, VGA, HDMI. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
The power consumed by the TV in operating mode from the network is 35 watts.
Dimensions: With stand 461x356x184 mm, Without stand 461x298x77 mm.
TV weight: 4.5 kg.
Attention! SUPRA STV-LC1917W LCD TV panel HK185WLCM-BH01H is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!

REPAIRING / SERVICING TV SUPRA STV-LC1917WD

Technical description and composition of the SUPRA STV-LC1917WD TV, panel type and modules used. The composition of the modules.
SUPRA
Model: STV-LC1917WD
Chassis / Version: CVMV26L-G
Panel: 720p HD, 1366x768
MainBoard: CVMC26L-G
IC MainBoard: Flash K24C32
STV-LC1917WD Specifications
SUPRA STV-LC1917WD
General recommendations for TV LCD repair
SUPRA TV made on the CVMV26L-G chassis, like many other electronic devices, it is advisable to start repairing with an inspection of all external and internal elements. It often happens that visible damage to elements or connections helps determine the direction of troubleshooting. If charred resistors, swollen electrolytic or sintered capacitors, ring cracks in the soldering of the terminals of transformers or heating elements are found, it is advisable to establish the causes and consequences of the malfunction, as well as to check the connected elements and assemblies.
If the TV does not turn on, none of the indicators on its front panel will light or blink. Also, if the TV does not respond to the remote control and buttons, does not emit any sounds and any signs of operability when turned on, there is a certain probability that the power module is faulty and needs repair. Sometimes a problem with similar manifestations can occur only in the absence of processor power, which is typical for certain SUPRA models. It is advisable to start diagnostics of the power supply module by checking the condition of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in a breakdown state in such situations.
Power switches in switching power supplies (SMPS) fail for no reason very rarely and, in case of their breakdown, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices and resistors in the primary circuit. The reason may be a malfunction of the PWM regulator microcircuit, which can only be checked by replacing it with a new or known good one.
If, when SUPRA STV-LC1917WD is turned on, there is no image, or it appears for a second and disappears completely, but there is sound, most likely either the backlight lamps or their power converter (inverter) are faulty. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the common power supply. When disabling protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all standard protection circuits must be restored.
Repair or diagnostics of the CVMC26L-G motherboard should begin with checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software). Complicated repair of MB (SSB) board is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the Flash K24C32 elements. Malfunctions in BGA chips are usually easy to detect by warm-up.
 The SUPRA STV-LC1917WD has no picture when a signal is present, often caused by a malfunction of the display backlight. Moreover, the problem can be both inside the LCD panel (matrix), for example, a malfunction of CCFL (EEFL) lamps, and outside in their power source - an inverter.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.
Often, to repair the backlight, disassembling the LCD panel is required - a painstaking process that requires increased attention and accuracy from the master. In such cases, there is a possibility, with the slightest negligence, to damage the glass or loops and the TV may become unrepairable.
We strongly do not recommend doing such work to owners of TVs and craftsmen who do not have experience in repairing LCD panels! Moreover, at home (at the owner's home).
If there is no image in the presence of backlight, the screen becomes slightly lighter when turned on, and if the TV is open, the light from the lamps can be seen through the holes in the panel case.
In this case, there may be a malfunction inside the panel, damage to strips, loops, the T-CON board (Timing Controller) may be defective. But often the main board MainBoard turns out to be faulty, a software failure is also possible.

In such cases, the master first of all needs to check the main supply voltage of the panel at the LVDS connector, the fuses on the T-CON board or the panel brackets, as well as the supply and reference voltages for the line and column drivers - VGH, VGL, Vcom.
If all of the above measurements are within the normal range, then the oscilloscope should track the passage of LVDS signals from the MainBoard, as well as synchronizing signals from T-CON to loops with drivers.

Remember! Attempts to repair the SUPRA STV-LC1917WD TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!

 DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC1917WD, Main: CVMC26L-G

 The appearance of the MainBoard CVMV26L-G is shown in the figure below:
CVMV26L-G
The CVMV26L-G motherboard uses a TSUMV26KE-LF (TSUMV36KE-LF) processor, combined with a scaler, SPI FLASH 520Kb and EEPROM 24C02C.
It is advisable to start repairing the MainBoard with checking the voltage converters and linear stabilizers, which are necessary to provide power in operating and standby modes. Check the power supply of the LCD panel 5V or 12V, depending on the type of panel used, it is necessary to measure directly at the LVDS connector. If, with the necessary supply voltages, the TV does not come out of Stand-by mode, does not respond to the remote control and control buttons, you should update the SPI Flash software.
Main features of SUPRA STV-LC1917WD device:
Installed matrix (LCD panel) 720p HD, 1366x768.

The necessary supply voltages for all nodes of the SUPRA STV-LC1917WD TV are provided by a switching power supply.
MainBoard - the main board (motherboard) is a CVMC26L-G module, using Flash K24C32 chips and others.



SUPRA STV-LC1917WD LCD TV with 19 "(48 cm) diagonal 16: 9 format LCD TV. Brightness of the screen 250 cd / m² provided by CCFL (EEFL) fluorescent lamps backlighting. Dynamic contrast ratio 4000: 1 achieved by special control work of backlight It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready) .Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and formation of a digital signal occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p Supported media file formats: MP3, WMA, MPEG4, DivX, VideoCD, SVCD, Picture CD, JPEG.
The power of the sound system of 6 W (2x3 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, S-Video, SCART, VGA, HDMI, USB. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
The power consumed by the TV in operating mode from the network is 35 watts.
Dimensions: With stand 461x356x184 mm, Without stand 461x298x77 mm.
TV weight: 4.8 kg.
Attention! The SUPRA STV-LC1917WD LCD TV panel is its most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!

REPAIRING / SERVICING TV SUPRA STV-LC1922WD

Technical description and composition of the SUPRA STV-LC1922WD TV, panel type and modules used. The composition of the modules.
SUPRA
Model: STV-LC1922WD
Chassis / Version: CVMV26L-A-20 V2J08
Panel: MT185GW01 V.0
MainBoard: CVMV26L-A-20
IC MainBoard: TSUMU26KE-LF, 25F40, 24C02, 24C32, TDA1517P, MP1423DN, SPHE8202TQ, W9864G61H-6, 25F80
Tuner: F21WT-3BAR-E
SUPRA
Model: STV-LC1922WD
Chassis / Version: SP208ESA HK-7050A-V2.80-E
Panel: MP185GW01 V.2 // M156MWR1
Inverter (backlight): LK-IN220201A
Power Supply (PSU): Adapter 12V
MainBoard: SP208ESA HK-7050A-V2.80-E
IC MainBoard: EN25T80, 24C32, 24C02, EN25T80
Tuner: TNF931D-BFR1
STV-LC1922WD Specifications
SUPRA STV-LC1922WD
General recommendations for TV LCD repair
Diagnostics of malfunctions and repair of SUPRA with chassis SP208ESA HK-7050A-V2.80-E, like other electronic devices, it is recommended to begin with an external examination of external and internal elements. In some cases, visible external damage to elements can suggest directions for troubleshooting and localizing a defect even before the necessary measurements are taken at the control points of electronic circuit assemblies. Experienced repairmen often guess about the causes of the defect and the possible consequences, for example, by ring cracks in the soldering of the element terminals, as well as by swollen capacitors or resistors burnt out to coal dust and other external indirect signs.
If SUPRA STV-LC1922WD does not turn on, no indicator lamps on the front panel will light up or blink, therefore, there is a very high probability of a power module malfunction. In some cases, only the processor power regulator may be faulty. When diagnosing and repairing the power supply, first of all, you should replace the swollen capacitors of the secondary rectifier filter and check the fuse and, if it is broken, you must identify the cause. Often in such cases an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module - rectifier diodes and transistors in the primary circuit.
Power switches in switching power supplies (SMPS) fail for no reason very rarely and, in case of their breakdown, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices and resistors in the primary circuit. The reason may be a malfunction of the PWM regulator microcircuit, which can only be checked by replacing it with a new or known good one.
If SUPRA STV-LC1922WD has no picture, but there is sound, there is a possibility of a malfunction of the backlight lamps or their power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are in good condition.
Diagnostics of the inverter can be difficult due to the operation of the protection, which is organized by the designers to prevent negative consequences or fires in emergency situations, for example, when short circuits or breaks in the lamp supply circuit, as well as their possible depressurization. To make the necessary measurements at the control points or to take the necessary oscillograms, the repairers have to block the protection circuits in order to be able to diagnose.
The SP208ESA HK-7050A-V2.80-E motherboard is subject to checking if there is no response to the remote control and function buttons, the standby indicator blinks or is on continuously. In such cases, if the converters or power regulators of the microcircuits are working, it may be necessary to update the software. Often the MB (SSB) board must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - EN25T80, 24C32, 24C02, EN25T80, TNF931D-BFR1 tuner and replace the faulty chips with new ones. Some malfunctions may be associated with the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.

 The SUPRA STV-LC1922WD has no picture when there is a signal, often caused by a malfunction of the display backlight. Moreover, the problem can be both inside the LCD panel (matrix) MP185GW01 V.2, for example, a malfunction of CCFL (EEFL) lamps, and outside in their power source - an inverter.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.
Often, to repair the backlight, disassembly of the MP185GW01 LCD panel is required - a painstaking process that requires increased attention and accuracy from the master. In such cases, there is a possibility, with the slightest negligence, to damage the glass or loops and the TV may become unrepairable.

I strongly do not recommend doing such work to owners of TVs and craftsmen who do not have experience in repairing LCD panels! Moreover, at home (at the owner's home).

If there is no image in the presence of backlight, the screen becomes slightly lighter when turned on, and if the TV is open, the light from the lamps can be seen through the holes in the panel case.

In this case, there may be a malfunction inside the panel, damage to strips, loops, the T-CON board (Timing Controller) may be defective. But often the MainBoard SP208ESA main board also turns out to be faulty, a software failure is also possible.
In such cases, the master first of all needs to check the main supply voltage of the panel at the LVDS connector, the fuses on the T-CON board or the panel brackets, as well as the supply and reference voltages for the line and column drivers - VGH, VGL, Vcom.
If all of the above measurements are within the normal range, then the oscilloscope needs to track the passage of LVDS signals from the MainBoard SP208ESA, as well as synchronization signals from T-CON to loops with drivers.

Remember! Attempts to repair the SUPRA STV-LC1922WD TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!

Additional MainBoard Repair
The appearance of the MainBoard SP208ESA is shown in the figure below:
SP208ESA
SP208ESA can be used in TVs:
SUPRA STV-LC1522WD (Panel 15 дюймов), SUPRA STV-LC1922WD (Panel MP185GW01 V.2), SUPRA STV-LC2222W (Panel CLAA215FA01 (M)), SUPRA STV-LC2222WD (Panel CLAA215FA01).
Main features of SUPRA STV-LC1922WD device:
Installed matrix (LCD-panel) MP185GW01 V.2 or M156MWR1.
The LK-IN220201A inverter is used to power the backlight lamps.
An external adapter 12V is used to power all the internal components of the SUPRA STV-LC1922WD TV.
MainBoard - the main board (motherboard) is an SP208ESA module, using chips EN25T80, 24C32, 24C02, EN25T80 and others.
The TNF931D-BFR1 tuner provides reception of television programs and tuning to channels.
SUPRA LCD TV STV-LC1922WD with LCD MP185GW01, 19 "(48 cm) 16: 9 format diagonal. Screen brightness of 250 cd / m² is provided by CCFL (EEFL) fluorescent lamps. Contrast - ratio of maximum brightness to minimum brightness 500: 1 Dynamic contrast ratio of 1000: 1 is achieved by special control of the backlight.It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in 720p (HD Ready) .Input high-frequency or video signal is decoded in analog PAL systems , SECAM, NTSC Graphic processing and digital signal shaping takes place in 480i, 480p, 576i, 576p, 720p, 1080i standards Supported multimedia file formats: MP3, VideoCD, SVCD, JPEG.
The power of the sound system of 6 W (2x3 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, S-Video, SCART, RGB, VGA, HDMI, USB. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768.
The power consumed by the TV in operating mode from the mains is 36 W.
Overall dimensions: 470x377x180 mm.
TV weight: 7.2 kg.
Attention! SUPRA STV-LC1922WD LCD TV panel MP185GW01 V.2 is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!

REPAIRING / SERVICING TV SUPRA STV-LC1515WD

Technical description and composition of the SUPRA STV-LC1515WD TV, panel type and modules used. The composition of the modules.
SUPRA
Model: STV-LC1515WD
Chassis / Version: V1J08
Panel: TMS156WX1-01TB
Power Supply (PSU): LK1060-005C
PWM Power: LD7575PS
MOSFET Power: FQPF8N60C
MainBoard: CVMV26L-A-20
IC MainBoard: CPU TSUMV26KE-LF, Flash EON EN25F40 TV, EON EN25T80 DVD
Tuner: F21WT-3BAR-E
STV-LC1515WD Specifications
SUPRA STV-LC1515WD
General recommendations for TV LCD repair
Diagnostics of malfunctions and repair of SUPRA with CVMV26L-A-20 chassis, like other electronic devices, is recommended to begin with an external examination of external and internal elements. Based on visible changes in the state of components, it is usually possible to determine the further direction of troubleshooting and localization of the defect before taking the necessary measurements. Elements with visible damage, for example, capacitors swollen after the electrolyte boils, charred resistors in certain nodes of the circuit, as well as ring cracks in the solders, will help the master guess about the causes and possible consequences of the malfunction.
If SUPRA STV-LC1515WD does not turn on, no indicator lamps on the front panel will light up or blink, therefore, there is a very high probability of a power module malfunction. In some cases, only the processor power regulator may be faulty. When diagnosing and repairing the power supply, first of all, you should replace the swollen capacitors of the secondary rectifier filter and check the fuse and, if it is broken, you must identify the cause. Often in such cases an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module - rectifier diodes and transistors in the primary circuit.
The reasons for the breakdown of the power switch in switching power supplies (SMPS) can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of a PWM regulator microcircuit or breaks in resistors in its strapping.
If, when SUPRA STV-LC1515WD is turned on, there is no image, or it appears for a second and disappears altogether, but there is sound, most likely either the backlight lamps or their power converter (inverter) are faulty. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the common power supply. It should be remembered that when the protection is disabled in order to diagnose a malfunction, there is always a risk of failure of the power elements of the inverter. After repairs, it is imperative to restore all standard converter protection circuits.
Repair or diagnostics of the CVMV26L-A-20 motherboard should begin with checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software). Complicated MB (SSB) repair is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU TSUMV26KE-LF, Flash EON EN25F40 TV, EON EN25T80 DVD elements requires the necessary training and professional skills in repairing modules at the component level. Problems associated with BGA soldering technologies can be diagnosed by the warm-up method.

 The SUPRA STV-LC1515WD has no picture when there is a signal, and it is often caused by a malfunction of the display backlight. Moreover, the problem can be both inside the LCD panel (matrix) TMS156WX1-01TB, for example, a malfunction of CCFL (EEFL) lamps, and outside in their power source - an inverter.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.

Often, to repair the backlight, disassembly of the TMS156WX1-01TB LCD panel is required - a painstaking process that requires increased attention and accuracy from the master. In such cases, there is a possibility, with the slightest negligence, to damage the glass or loops and the TV may become unrepairable.

We strongly do not recommend doing such work to owners of TVs and craftsmen who do not have experience in repairing LCD panels! Moreover, at home (at the owner's home).
If there is no image in the presence of backlight, the screen becomes slightly lighter when turned on, and if the TV is open, the light from the lamps can be seen through the holes in the panel case.
In this case, there may be a malfunction inside the panel, damage to strips, loops, the T-CON board (Timing Controller) may be defective. But often the main board MainBoard CVMV26L-A-20 turns out to be faulty, a software failure is also possible.

In such cases, the master first of all needs to check the main supply voltage of the panel at the LVDS connector, the fuses on the T-CON board or the panel brackets, as well as the supply and reference voltages for the line and column drivers - VGH, VGL, Vcom.

If all of the above measurements are within the normal range, then the oscilloscope should track the passage of LVDS signals from the MainBoard CVMV26L-A-20, as well as synchronizing signals from T-CON to loops with drivers.

Attention to the owners! Attempts to repair the SUPRA STV-LC1515WD TV yourself are not recommended by the manufacturer and can lead to serious negative consequences!

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC1515WD, Main: CVMV26L-A-20, Panel: 720p HD, 1366x768

 The appearance of the MainBoard CVMV26L-A-20 is shown in the figure below:
CVMV26L-A-20

The CVMV26L-A-20 motherboard uses a TSUMV26KE-LF (TSUMV36KE-LF) processor combined with a scaler, SPI FLASH 520Kb ROM and EEPROM 24C02C.

It is advisable to start repairing the MainBoard with checking the voltage converters and linear stabilizers, which are necessary to provide power in operating and standby modes. Check the power supply of the LCD panel 5V or 12V, depending on the type of panel used, it is necessary to measure directly at the LVDS connector. If, with the necessary supply voltages, the TV does not come out of Stand-by mode, does not respond to the remote control and control buttons, you should update the SPI Flash software.
 
CVMV26L-A-20 can be used in TVs:
SUPRA STV-LC1926WD (Panel M185XW01 V0), SUPRA STV-LC1922WD (Panel MT185GW01 V.0), SUPRA STV-LC2222WD (Panel CLAA215FA), SUPRA STV-LC2622WD (Panel MT215DW01), SUPRA STV-LC1626WD (Panel 720p HD 1600x900), SUPRA STV-LC2417F STV-LC2417FD (Panel M236H1-P01), SUPRA STV-LC1515WD (Panel 720p HD 1366x768), SUPRA STV-LC2422W (Panel M236M1-L01), SUPRA STV-LC2422WD (Panel Panel), THOMSON T24C99H CVMV26L-A (Panel M236H1-L01 Rev.C2).
External view of the power supply
Main features of SUPRA STV-LC1515WD device:
Installed matrix (LCD panel) TMS156WX1-01TB.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC1515WD TV is carried out by the LK1060-005C power module, or its analogs using LD7575PS microcircuits and FQPF8N60C power switches.
MainBoard - the main board (motherboard) is a CVMV26L-A-20 module, using CPU TSUMV26KE-LF chips, Flash EON EN25F40 TV, EON EN25T80 DVD and others.
The F21WT-3BAR-E tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AVIC
Model: TMS156WX1-01TB 4 Compatible model
Type: a-Si TFT-LCD, Panel
Diagonal size: 15.6 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 344.232x193.536 mm
Surface: Antiglare
Brightness: 250 cd / m²
Contrast Ratio: 500: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 60%
Response Time: 2/6 (Tr / Td)
Frequency: 60Hz
Lamp Type: 2 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V


LCD TV SUPRA STV-LC1515WD with LCD, diagonal size 15 "16: 9. Brightness of the screen of 250 cd / m² is provided by CCFL (EEFL) fluorescent lamps. Contrast - the ratio of maximum to minimum brightness is 500: 1. Dynamic contrast ratio of 1000: 1 is achieved by special control of the backlight.It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in a graphic resolution of 720p (HD Ready) .Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping takes place in 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards Supported multimedia file formats: MP3, WMA, MPEG4, VideoCD, SVCD, JPEG.
The power of the sound system of 6 W (2x3 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, S-Video, SCART, RGB, VGA, HDMI. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768.
The power consumed by the TV in operating mode from the network is 40 watts.
Overall dimensions: 395x320x160 mm.
TV weight: 5 kg.

Attention! The SUPRA STV-LC1515WD LCD TV panel is its most expensive component.

Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!

REPAIRING / SERVICING TV SUPRA STV-LC1505W

Technical description and composition of the SUPRA STV-LC1505W TV, panel type and modules used. The composition of the modules.
SUPRA
Model: STV-LC1505W
Chassis / Version: V1I10
Panel: HT156WX1-100
MainBoard: B.HVB21D 9022
IC MainBoard: SPI FLASH KH25L4005, SOUND: TDA1517
Tuner: ET-6T1E-LF-108W-A
STV-LC1505W Specifications
SUPRA STV-LC1505W
General recommendations for TV LCD repair
It is advisable to start repairing all electronic devices, including the SUPRA TV based on the V1I10 chassis, with an external examination of its external and internal elements. Based on visible changes in the state of components, it is usually possible to determine the further direction of troubleshooting and localization of the defect before taking the necessary measurements. In some cases, defective elements can be seen with the naked eye, for example, charred resistors or swollen sintered capacitors, or electrolytic ones in rectifier filters. The formed ring cracks in the soldering of the terminals of transformers or heating circuit elements are also frequent sources of many malfunctions with a variety of external manifestations.
If SUPRA STV-LC1505W does not turn on, none of the indicator lamps on the front panel will light up or blink, therefore, there is a very high probability of a power module malfunction. In some cases, only the processor power regulator may be faulty. When diagnosing and repairing the power supply, first of all, you should replace the swollen capacitors of the secondary rectifier filter and check the fuse and, if it is broken, you must identify the cause. Often in such cases an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module - rectifier diodes and transistors in the primary circuit.
The reasons for the breakdown of the power switch in switching power supplies (SMPS) can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of a PWM regulator microcircuit or breaks in resistors in its strapping.
If, when you turn on the TV, the image appears and immediately disappears, or is absent initially when turned on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (backlight power converter). In such cases, the lamps, the inverter and the common power module must be checked, in which the electrolytic capacitors of the rectifier filter supplying the inverter must be checked. When disabling the protection of the inverter (to enable diagnostics), special care must be taken due to the risk of failure of the power elements. After the completion of all repair work, it is imperative to restore the protection circuits for the full and safe further operation of the TV by the user.

 The SUPRA STV-LC1505W has no picture when a signal is present, often caused by a malfunctioning display backlight. Moreover, the problem can be both inside the LCD panel (matrix) HT156WX1-100, for example, a malfunction of CCFL (EEFL) lamps, and outside in their power source - an inverter.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.
Often, to repair the backlight, disassembly of the HT156WX1-100 LCD panel is required - a painstaking process that requires special attention and accuracy from the master. In such cases, there is a possibility, with the slightest negligence, to damage the glass or loops and the TV may become unrepairable.
We strongly do not recommend doing such work to owners of TVs and craftsmen who do not have experience in repairing LCD panels! Moreover, at home (at the owner's home).
If there is no image in the presence of backlight, the screen becomes slightly lighter when turned on, and if the TV is open, the light from the lamps can be seen through the holes in the panel case.
In this case, there may be a malfunction inside the panel, damage to strips, loops, the T-CON board (Timing Controller) may be defective. But often the main board MainBoard B.HVB21D also turns out to be faulty, a software failure is also possible.
In such cases, the master first of all needs to check the main supply voltage of the panel at the LVDS connector, the fuses on the T-CON board or the panel brackets, as well as the supply and reference voltages for the line and column drivers - VGH, VGL, Vcom.
If all the above measurements are within the normal range, then the oscilloscope should track the passage of LVDS signals from MainBoard B.HVB21D, as well as synchronizing signals from T-CON to loops with drivers.

Diagnostics and repair of the B.HVB21D 9022 motherboard is carried out by checking the functionality of the stabilizers or power converters of the module chips. In some cases, a software update is required. Complicated MB (SSB) repair is possible only in the conditions of a service center with the necessary equipment. Checking or replacing SPI FLASH KH25L4005, SOUND: TDA1517 elements requires the necessary training and professional skills to repair modules at the component level. Problems associated with BGA soldering technologies can be diagnosed by the warm-up method.

Attention to users! Self-repair of the SUPRA STV-LC1505W TV without proper qualifications and experience can lead to its complete non-repairability!

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC1505W V1I10, MAIN B.HVB21D, PANEL HT156WX1-100

The appearance of MainBoard B.HVB21D is shown in the figure below:
B.HVB21D
Main features of SUPRA STV-LC1505W device:
Installed matrix (LCD panel) HT156WX1-100.
The necessary supply voltages for all nodes of the SUPRA STV-LC1505W TV are provided by a switching power supply.
MainBoard - the main board (motherboard) is a B.HVB21D module, using SPI FLASH KH25L4005, SOUND: TDA1517 and others.
Tuner ET-6T1E-LF-108W-A provides reception of television programs and tuning to channels.

LCD TV SUPRA STV-LC1505W with LCD HT156WX1-100, 15 "diagonal, 16: 9 format. Screen brightness of 250 cd / m² is provided by CCFL (EEFL) fluorescent lamps. Contrast - ratio of maximum brightness to minimum is 500 : 1. It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and formation of a digital signal occurs in 480i, 480p, 576i, 576p, 720p, 1080i standards Stereo sound is realized by two built-in speakers The NICAM STEREO audio processing system is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, S-Video, VGA. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768.
Dimensions: With stand 1125x812x204 mm, Without stand 1054x791x120 mm.
TV weight: 3.9 kg.
Attention! SUPRA STV-LC1505W LCD TV panel HT156WX1-100 is its most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!  Once again, I remind users and TV owners.
Self-repair attempts can have serious negative consequences, up to complete non-repairability.