REPAIRING / SERVICING TV SUPRA STV-LC32ST2000W

Technical description and composition of the SUPRA STV-LC32ST2000W TV, panel type and modules used. The composition of the modules.
SUPRA LED
Model: STV-LC32ST2000W
Chassis / Version: CV338H-T42
Panel: HK315LEDM-JH36H
LED driver (backlight): integrated into MainBoard
PWM LED driver: BIT3267
MOSFET LED driver: AOD4454
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: CV338H-T42
IC MainBoard: MSD6A338, MSB102KT, W25Q16DVSSIG, THGBM8G5D1KBAIL
Tuner: CDT-9NT372RF-10 (R842)
STV-LC32ST2000W Specifications
SUPRA STV-LC32ST2000W
General recommendations for TV LCD LED repair
Possible malfunctions
- TV SUPRA STV-LC32ST2000W does not turn on and does not give any signs of turning on, does not respond to control buttons and to the remote control.
In such cases, the AC / DC converter of the mains voltage, which is combined with the CV338H-T42 main board, is often faulty. Its output voltages should be measured and, in their absence, the power switches and rectifier diodes should be checked for the probability of a short circuit in the converters.
In case of any breakdowns in the secondary circuits, the converter can operate in an emergency mode of a short circuit, and with a short circuit in the power elements of the primary circuit, the mains fuse or current sensor in the source of the key is often cut 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 regulators (PWM) PWM SOT23-6, if they have no visible damage to the case and an open short circuit between the pins, are usually checked by replacing.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately
Often in such cases there is no backlighting of the LED panel. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
When diagnosing, it must be borne in mind that it is impossible to check for an open in the circuit of the LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally a current source. By opening the panel, you can check each LED separately. Typically, Chinese multimeters light up one 3-volt LED slightly if the probes are connected to it in the forward direction. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of LED health. In the event of a malfunction of the LED, its zener diode will either be cut off or broken into the K / Z.
- The indicator blinks or is on constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the CV338H-T42 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - MSD6A338, MSB102KT, W25Q16DVSSIG, THGBM8G5D1KBAIL which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its pins with the board (indicated by warming up).
If there is no reception of television channels, but the TV is working properly from external devices, first of all, you need to check the supply voltage of the CDT-9NT372RF-10 (R842) tuner and update the software. I2C communication pulses must be monitored with an oscilloscope.

Owners of the STV-LC32ST2000W TV are advised to contact only qualified specialists with the necessary experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!

DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL   --------->   Chassis CV338H-T42-13B

 The appearance of the MainBoard CV338H-T42 is shown in the figure below:
CV338H-T42
CV338H-T42 can be used in TVs:
BBK 32LEX-5023/T2C (Panel V320BJ6-Q01 Rev.C1 (TH32YS1705C0327)), BBK 32LEX-5024/T2C (Panel TH32YS1704D0089).
Main features of SUPRA STV-LC32ST2000W device:
Installed matrix (LED panel) HK315LEDM-JH36H.
To power the backlight LEDs, a converter combined with the CV338H-T42 main board is used, controlled by the BIT3267 PWM controller. The keys of the AOD4454 type are used as power elements of the LED driver.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a CV338H-T42 module, using MSD6A338, MSB102KT, W25Q16DVSSIG, THGBM8G5D1KBAIL and others.
Tuner CDT-9NT372RF-10 (R842) provides reception of television programs and tuning to channels.
SUPRA LED TV STV-LC32ST2000W with LCD HK315LEDM-JH36H, 32 "(81 cm) 16: 9. operation of LEDs depending on the illumination of areas in the scene.The technology of manufacturing the display model uses LED LED backlighting.It is possible to view programs and films and images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready).
STV-LC32ST2000W has built-in SMART software and pre-installed Android operating system. Internet connection can be made via Wi-Fi wireless connection. Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 12 W (2x6 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
An external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, VGA, HDMI x3, USB x2, Ethernet (RJ-45), Wi-Fi. A headphone output is provided. The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Attention! The HK315LEDM-JH36H panel of the SUPRA STV-LC32ST2000W LED TV is an expensive and unreliable element.

Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.

KONKA KPS 1110C2-01 AND KONKA KPS L120C2-02 SMPS (POWER BOARD) SCHEMATIC CIRCUIT DIAGRAM

 

Konka KPS 1110C2-01 Power board schematic

Konka KPS L120C2-02 Power board schematic

REPAIRING / SERVICING TV SUPRA STV-LC32ST670WL

Technical description and composition of the SUPRA STV-LC32ST670WL TV, panel type and modules used. The composition of the modules.
SUPRA LED
Model: STV-LC32ST670WL
Chassis / Version: V1N10
Panel: ST3151A05-5 SEL320HY (CD0-701)
LED backlight: SEL320HY-CD0300-X3
T-CON: MT3151A05-5-XC-5
LED driver (backlight): integrated into PSU
PWM LED driver: MP3398
MOSFET LED driver: ME15N10-G
Power Supply (PSU): 168P-L2L021-W0 5800-L2L021-W000 P4839B
PWM Power: TEA1733
MOSFET Power: TF11N70
MainBoard: 5800-A6M88G-0P10 VER00: 00
IC MainBoard: 24C64, TPA3110D2
Control: IR: 5800-RNE510-RP00, WiFi: 5800-W81920-0P50
STV-LC32ST670WL Specifications
SUPRA STV-LC32ST670WL
General recommendations for TV LCD LED repair
Possible manifestations of defects
- SUPRA STV-LC32ST670WL does not turn on, indicators on the front panel are not lit or blinking. The TV does not respond to control buttons and the remote control.
In some of these cases, a fault is detected in the 168P-L2L021-W0 power supply module. It is necessary to measure its output supply voltages, and in their absence, check the serviceability of the power switches (TF11N70) of the converters and rectifier diodes for the probability of breakdown in semiconductor PN junctions.
In the event 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 current sensor in the source of the key usually breaks off.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements, which can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying the PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM) TEA1733, in the absence of external damage and a short circuit between the terminals, are checked by replacing them with a known good one.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately
In such cases, the most likely malfunction of the LED panel backlighting elements. The reason may be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
Without a special current source, it is impossible to check the line of LEDs connected in series, and it is unsafe for them to use any voltage sources above 12V for this purpose. Then all that remains is to open the panel and check each LED separately. Typically, Chinese multimeters with a 9V power supply lightly light up one 3-volt LED, if you connect the probes to it in the forward direction, the red probe to the anode, and the black one to the cathode. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of LED health. In the event of a malfunction of the LED, its zener diode will either be cut off or broken into the K / Z.
- The TV does not go into operation, does not respond to the remote control. The indicator on the front panel is on or blinking.
Repair or diagnostics of the 5800-A6M88G-0P10 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). Often the MB (SSB) board needs to be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - 24C64, TPA3110D2 and replace the failed 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.

Users and owners of TVs should remember that attempts to self-repair the SUPRA STV-LC32ST670WL TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!

 The appearance of the MainBoard 5800-A6M88G-0P10 is shown in the figure below:
5800-A6M88G-0P10
External view of the power supply
Main features of SUPRA STV-LC32ST670WL device:
Installed matrix (LED panel) ST3151A05-5 SEL320HY (CD0-701).
Matrix control uses Timing Controller (T-CON) MT3151A05-5-XC-5.
A converter combined with a power supply is used to power the backlight LEDs, and is controlled by the MP3398 PWM controller. The keys of the ME15N10-G type are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC32ST670WL TV is carried out by the 168P-L2L021-W0 power module, or its analogs using TEA1733 microcircuits and TF11N70 power switches.
MainBoard - the main board (motherboard) is a 5800-A6M88G-0P10 module, using 24C64, TPA3110D2 and others.
LED TV SUPRA STV-LC32ST670WL with LCD ST3151A05-5, diagonal size 32 "(81 cm) 16: 9. The required screen brightness of 300 cd / m2 is provided by LED backlight. Dynamic contrast ratio of 80000: 1 is achieved by special control operation of LEDs depending on the illumination of areas in the scene.The technology of manufacturing the display model uses LED LED backlighting.It is possible to view programs and films and images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready).
STV-LC32ST670WL TV is equipped with SMART software, built-in applications and the ability to work on the Internet. Internet connection can be made via Wi-Fi wireless connection. The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping takes place in the 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards. Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 12 W (2x6 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
An external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), audio x2, VGA, HDMI x3, MHL, USB x2, Ethernet (RJ-45), Wi-Fi. 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, 1360x768. The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2 standards.
Overall dimensions: 818x508x128 mm.
Attention! Panel ST3151A05-5 SEL320HY (CD0-701) SUPRA LED TV STV-LC32ST670WL is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.

REPAIRING / SERVICING TV SUPRA STV-LC32ST880WL

Technical description and composition of the SUPRA STV-LC32ST880WL TV, panel type and modules used. The composition of the modules.
SUPRA LED
Model: STV-LC32ST880WL
Chassis / Version: V1N08
Panel: JHD315GH-E52
T-CON: T320XVN02.9 CTRL BD 32T24-COC
LED driver (backlight): integrated into MainBoard
PWM LED driver: SELC2010M
MOSFET LED driver: AOU3N50
Power Supply (PSU): integrated into MainBoard
PWM Power: AP2161
MainBoard: RSAG7.820.5697 / ROH Stiker: LHD32D33WT (1) (0)
IC MainBoard: CPU: MSD6308RTE-SW A7MKH79D, Nand flash: H27U4G8F2DTR, EERPROM: FM24C32A, Audio: TPA3110D2
Tuner: SIDT-10A2 / 111A24 / RoH
Control: Service Mode: MENU-BALANCE-1969-MENU
STV-LC32ST880WL Specifications
SUPRA STV-LC32ST880WL
General recommendations for TV LCD LED repair
Possible manifestations of defects
- TV SUPRA STV-LC32ST880WL 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 common power supply is often faulty - the AC / DC converter of the mains voltage, which is combined with the elements of the RSAG7.820.5697 main board. It is necessary to measure its output supply voltages, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for the probability of breakdown in semiconductor PN junctions.
In case of breakdowns in the secondary circuits, the converter can operate in a short-circuit mode, and in case of a short circuit in the elements of the primary circuit, the mains fuse is usually cut 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) AP2161, if they have no visible damage to the case and an outright short circuit between the terminals, are usually checked by replacing.
- 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.
As a rule, in this case, the backlight of the LED panel is faulty. Often the reason is a malfunction of the LEDs (open circuit, short circuit ...), or the connectors of the strips (strings), less often the LED driver turns out to be faulty.
It is impossible to check the LED bars for a break without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters tend to light a single 3V LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as an indicator of serviceability. In faulty LEDs, the zener diode will either be cut off, or pierced in the K / Z.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.
Repair or diagnostics of the RSAG7.820.5697 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). When repairing an MB board, you need to check its components CPU: MSD6308RTE-SW A7MKH79D, Nand flash: H27U4G8F2DTR, EERPROM: FM24C32A, Audio: TPA3110D2. Defective elements must be replaced. If chips with BGA soldering technology are used, the problem in its implementation is detected by local heating of the chip.
If you suspect a malfunction of the SIDT-10A2 / 111A24 / RoH tuner, first of all, you need to make sure the software is correct, as well as the presence of the required supply voltage levels and data exchange pulses with the processor via the I2C bus at the corresponding tuner pins.

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

 
The appearance of the MainBoard RSAG7.820.5697 is shown in the figure below:
RSAG7.820.5697
Main features of SUPRA STV-LC32ST880WL device:
Installed matrix (LED panel) JHD315GH-E52.
The matrix control uses the T320XVN02.9 Timing Controller (T-CON).
To power the backlight LEDs, a converter combined with the RSAG7.820.5697 main board is used, controlled by the SELC2010M PWM controller. The keys of the AOU3N50 type are used as power elements of the LED driver.
The power module is combined with the MainBoard and is made according to the AC / DC flyback converter circuit using AP2161 microcircuits.
MainBoard - the main board (motherboard) is an RSAG7.820.5697 module, using CPU chips: MSD6308RTE-SW A7MKH79D, Nand flash: H27U4G8F2DTR, EERPROM: FM24C32A, Audio: TPA3110D2 and others.
The SIDT-10A2 / 111A24 / RoH tuner provides reception of television programs and tuning to channels.
SUPRA LED TV STV-LC32ST880WL with LCD JHD315GH-E52, 32 "(81 cm) 16: 9. The required screen brightness of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 80000: 1 is achieved by special control operation of LEDs depending on the illumination of areas in the scene.This model uses an LED-panel with an edge arrangement of backlighting LEDs - Edge LED.It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in the standard graphic resolution 720p (HD Ready) ...
STV-LC32ST880WL has built-in SMART software and pre-installed Android operating system. Internet connection can be made via Wi-Fi wireless connection. The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping takes place in the 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards. Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power of 16 W (2x8 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
An external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, VGA, HDMI x2, USB, Ethernet (RJ-45), Wi-Fi. 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, 1360x768. The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Dimensions: With stand 736x500x180 mm, Without stand 736x455x68 mm.
TV weight: 7.9 kg.
Attention! Panel JHD315GH-E52 SUPRA LED TV STV-LC32ST880WL is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.

REPAIRING / SERVICING TV SUPRA STV-LC32ST900WL

Technical description and composition of the SUPRA STV-LC32ST900WL TV, panel type and modules used. The composition of the modules.
SUPRA LED
Model: STV-LC32ST900WL
Chassis / Version: V1R07
Panel: HK315LEDM-OHFCH
LED backlight: HK32D10A-ZC21A-03 303HK320031
T-CON: CV320PW03S
LED driver (backlight): integrated into MainBoard
PWM LED driver: BIT3267
MOSFET LED driver: AOD4454
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6 (LD7536)
MOSFET Power: SMK10N60
MainBoard: CV628H-T42 BASE-CV628H_T42-V009
IC MainBoard: CPU: MSD6A628VXM-ST, NAND: KLM4G1FEPD, SPI FLASH: Winb25Q16JVSIQ, AUDIO: TPA3110LD2
Tuner: CDT-9NT372-RF01 MSB102KT
STV-LC32ST900WL Specifications
SUPRA STV-LC32ST900WL
General recommendations for TV LCD LED repair
Possible manifestations of defects
- SUPRA STV-LC32ST900WL TV does not turn on at all. Control lamps do not light up or blink. The TV on the remote control and control panel buttons does not respond.
A malfunction in such cases should be looked for in the elements of the power source - the mains voltage converter (AC / DC), which is located on the MainBoard CV628H-T42. It is necessary to make sure that its output voltages are present and, if they are completely absent, check the power switches (SMK10N60) and rectifier diodes for a possible short circuit.
In case of any breakdowns in the secondary circuits, the converter can operate in an emergency mode of a short circuit, and with a short circuit in the power elements of the primary circuit, the mains fuse or current sensor in the source of the key is often cut off.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers PWM SOT23-6 (LD7536), in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or knowingly working properly.
- There is no picture, there is sound, it reacts to the remote control, the channels are switched. In some cases, the image appears when turned on and disappears immediately.
In such cases, the most likely malfunction of the LED panel backlighting elements. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
Without a special current source, it is impossible to check the line of LEDs connected in series, and it is unsafe for them to use any voltage sources above 12V for this purpose. Then all that remains is to open the panel and check each LED separately. Typically, Chinese multimeters with a 9V power supply lightly light up one 3-volt LED, if you connect the probes to it in the forward direction, the red probe to the anode, and the black one to the cathode. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of LED health. In the event of a malfunction of the LED, its zener diode will either be cut off or broken into the K / Z.
- The indicator blinks or is on constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the CV628H-T42 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). Often the MB (SSB) board needs to be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - CPU: MSD6A628VXM-ST, NAND: KLM4G1FEPD, SPI FLASH: Winb25Q16JVSIQ, AUDIO: TPA3110LD2 and replace the failed 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.
Before changing the CDT-9NT372-RF01 tuner, if it is not possible to tune to TV channels, you should make sure that there are supply voltages, which must be measured at the corresponding tuner terminals and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be monitored with an oscilloscope
Attention to TV owners! Attempts to repair SUPRA STV-LC32ST900WL yourself are not recommended by the manufacturer and can lead to serious negative consequences!


DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL   -------->    BBK 32LEX-5009 Chassis CV628H-T42


 The appearance of the MainBoard CV628H-T42 is shown in the figure below:
CV628H-T42
CV628H-T42 can be used in TVs:
BBK 43LEX-5009/FT2C (Panel LC430DUY (SH)(A1)), BBK 40LEX-5025/FT2C (Panel V400HJ6-PE1 DLEDSV400FHD), BBK 32LEX-5027/T2C (Panel V320BJ6-Q01 Rev.C1), SUPRA STV-LC40ST900FL (Panel V400HJ6-PE1).
Main features of SUPRA STV-LC32ST900WL device:
Installed matrix (LED panel) HK315LEDM-OHFCH.
Matrix control uses the Timing Controller (T-CON) CV320PW03S.
To power the backlight LEDs, a converter combined with the CV628H-T42 main board is used, controlled by the BIT3267 PWM controller. The keys of the AOD4454 type are used as power elements of the LED driver.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter circuit using PWM SOT23-6 (LD7536) microcircuits and power switches of the SMK10N60 type.
MainBoard - the main board (motherboard) is a Cultraview CV628H-T42 module using CPU chips: MSD6A628VXM-ST, NAND: KLM4G1FEPD, SPI FLASH: Winb25Q16JVSIQ, AUDIO: TPA3110LD2 and others.
Tuner CDT-9NT372-RF01 MSB102KT provides reception of television programs and tuning to channels.
SUPRA LED TV STV-LC32ST900WL with LCD display HK315LEDM-OHFCH, 32 "(81 cm) 16: 9. operation of LEDs depending on the illumination of areas in the scene.The technology of manufacturing the display model uses LED LED backlighting.It is possible to view programs and films and images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready).

STV-LC32ST900WL has built-in SMART software and pre-installed Android operating system. Internet connection can be made via Wi-Fi wireless connection. Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 12 W (2x6 W) is provided by two 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, component, VGA, HDMI x2, USB x3, Ethernet (RJ-45), Wi-Fi. A headphone output is provided. The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Dimensions: With stand 1235x758x284 mm, Without stand 713x435x86 mm.
Attention! The HK315LEDM-OHFCH panel of the SUPRA STV-LC32ST900WL LED TV is an expensive and unreliable element.

Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it flows down the glass onto the cables to make the TV non-repairable ...........................

REPAIRING / SERVICING TV SUPRA STV-LC32T400WL

Technical description and composition of the SUPRA STV-LC32T400WL TV, panel type and modules used. The composition of the modules.
SUPRA LED
Model: STV-LC32T400WL
Chassis / Version: HK-T.SP9202P53
Panel: HV320WX2-206
LED driver (backlight): integrated into MainBoard
PWM LED driver: OB3350CP
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: HK-T.SP9202P53
IC MainBoard: Flash 25Q32
STV-LC32T400WL Specifications
SUPRA STV-LC32T400WL
General recommendations for TV LCD LED repair
Repair of TVs, like other devices, it is advisable to start with an external examination. 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. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred layer of paint on the resistors - all this for the repairman can be a significant clue in assumptions about the causes and consequences of a malfunction.
If the TV does not turn on, none of the indicators on its front panel are on or blinking. Also, if the TV does not respond to the remote control and buttons, does not emit any sounds or 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. When repairing a power supply, it is advisable to start diagnostics with checking the mains fuse and electrolytic capacitors of the filters of the secondary rectifiers of the converter. In the event of a break in the fuse, the cause should be sought in the power semiconductor elements of the pulse converter of the main power supply unit. It is necessary first of all to check the diodes of the rectifier bridge of the mains voltage and the power switch (s) of the converter.
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 desirable to check by replacement.
Sometimes the SUPRA STV-LC32T400WL TV does not have a picture, but there is sound, or the picture appears and immediately disappears. In this case, there is a high probability of a malfunction of the HV320WX2-206 panel backlight LED converter, or an open circuit in the LED circuit is possible. In such cases, first of all, it is necessary to make sure that all electrolytic capacitors of the filter are in good working order for the power supply of the LED driver itself, including the power supply unit (power supply unit).
Often, in the absence of backlighting, disassembly of the panel is required. It is necessary to check the serviceability of the LED transitions, as well as the reliability of the contact connections in the lines and connectors.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and a voltage of several tens of volts is required to open their junctions. Ideally, a current source is suitable for such purposes.
The motherboard HK-T.SP9202P53 should be checked if there is no reaction 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.
In cases of complex MB (SSB) repairs and with the necessary skills and equipment, it may sometimes be necessary to replace its Flash 25Q32 chips and other possible faulty components. Malfunctions associated with the use of BGA soldering technologies are usually easily diagnosed by the warm-up method.

Remember! Attempts to self-repair the SUPRA STV-LC32T400WL TV by users without appropriate qualifications and the necessary experience can lead to serious negative consequences!

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC32T400WL, Main: HK-T.SP9202P53, Panel: HV320WX2-206

 The appearance of the MainBoard HK-T.SP9202P53 is shown in the figure below:
HK-T.SP9202P53
Main features of SUPRA STV-LC32T400WL device:
Installed matrix (LED panel) HV320WX2-206.
To power the backlight LEDs, a converter is used, combined with the main board HK-T.SP9202P53, controlled by the OB3350CP PWM controller.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a HK-T.SP9202P53 module, using Flash 25Q32 chips and others.
Additional technical information about the panel:
Brand: BOE
Model: HV320WX2-206
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: AFFS, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 10%), Hard coating (3H)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 6.6% (with Polarizer)
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit)
Response Time: 8 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
SUPRA LED TV STV-LC32T400WL with LCD HV320WX2-206, 32 "(81 cm) 16: 9 diagonal. The required screen brightness of 270 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 80000: 1 is achieved by special control operation of LEDs depending on the illumination of areas in the scene.This model uses an LED-panel with an edge arrangement of backlight LEDs - Edge LED.It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in the standard graphic resolution 720p (HD Ready) .Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, MPEG4, MKV , JPEG.
Speaker power of 16 W (2x8 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, component, SCART, VGA, HDMI x3, USB. 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, 1360x768. The digital tuner is capable of receiving television channels in the DVB-T, DVB-C, DVB-T2 standards.
Overall dimensions: 810x545x140 mm.
Attention! The HV320WX2-206 panel of the SUPRA STV-LC32T400WL LED TV is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.

REPAIRING / SERVICING TV SUPRA STV-LC32T410WL

Technical description and composition of the SUPRA STV-LC32T410WL TV, panel type and modules used. The composition of the modules.
SUPRA LED
Model: STV-LC32T410WL
Chassis / Version: V1N05 // V1N09
Panel: LC320DXJ-SFE1 // HV320WX2-206
LED driver (backlight): integrated into MainBoard
PWM LED driver: OCP8121
MOSFET LED driver: UF730L (TO-252)
Power Supply (PSU): integrated into MainBoard
PWM Power: FAN6755W (SOIC-7)
MOSFET Power: JCS7N65SB
MainBoard: KDL32PS618AT -LGD-196YTK
IC MainBoard: CPU: MSD1306XSEK, Spi Flash: 25Q32, 25X10, Audio: TDA7491LP
Tuner: NoName
STV-LC32T410WL Specifications
SUPRA STV-LC32T410WL
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- SUPRA STV-LC32T410WL TV does not turn on at all. Control lamps do not light up or blink. The TV on the remote control and control panel buttons does not respond.
In such cases, the common power supply is often faulty - the AC / DC converter of the mains voltage, which is combined with the elements of the KDL32PS618AT main board. Then you should measure its output voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of the power switches (JCS7N65SB) and rectifier diodes of the converters for a possible short circuit.
In case of breakdowns in the secondary circuits of the converter, it can usually work in an emergency mode in a short circuit mode, and with a short circuit in the power elements of the primary circuit, the mains fuse or current sensor in the source of the key is most often cut off.
Breakdown of Mos-Fet switches used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM regulator, in frequency-setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) FAN6755W (SOIC-7) are usually checked by replacing them with new ones, or knowingly working properly.
- There is no image, there is sound, it reacts to the remote control. Or the image may appear for a second when turned on and disappear immediately.
Most likely in these cases is a malfunction of the LED backlight. The reason may be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
When trying to detect a break in the LED lines, it should be borne in mind that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
- The TV does not turn on, the indicator signals standby or operating mode, or blinks.
Repair or diagnostics of the KDL32PS618AT motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) elements of the MainBoard - CPU: MSD1306XSEK, Spi Flash: 25Q32, 25X10, Audio: TDA7491LP. In cases where a BGA processor is used, its malfunction is usually detected by the local warm-up method.
If you suspect a malfunction of the NoName tuner, first of all, you need to make sure that the software is correct, as well as the presence of the necessary levels of supply voltages and pulses of data exchange with the processor via the I2C bus on the corresponding terminals of the tuner.

We remind users again! Attempts to self-repair the SUPRA STV-LC32T410WL TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC32T410WL V1N05, Main: KDL32PS618AT -LGD-196YTK, Panel: LC320DXJ-SFE1 // HV320WX2-206


DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC32T410WL V1N09, Main: KDL32PS618AT -LGD-196YTK, Panel: HV320WX2-206
 

 The appearance of the MainBoard KDL32PS618AT is shown in the figure below:
KDL32PS618AT
KDL32PS618AT can be used in TVs:
DNS K32D619 (Panel LC320DXJ(SF)(E1)), SUPRA STV-LC32T410WL (Panel LC320DXJ-SFE1 ).
Main features of SUPRA STV-LC32T410WL device:
Installed matrix (LED panel) LC320DXJ-SFE1 or HV320WX2-206.
To power the backlight LEDs, a converter combined with the KDL32PS618AT main board is used, controlled by the OCP8121 PWM controller. UF730L (TO-252) switches are used as power elements of the LED driver.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using FAN6755W (SOIC-7) microcircuits and JCS7N65SB power switches.
MainBoard - the main board (motherboard) is a KDL32PS618AT module, using CPU chips: MSD1306XSEK, Spi Flash: 25Q32, 25X10, Audio: TDA7491LP and others.
Tuner NoName provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LC320DXJ-SFE1
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: IPS, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 1%), Hard coating (3H)
Glass Depth: 0.50 + 0.50 mm
Contrast Ratio: 1200: 1
Display Colors: 16.7M (6-bit + Dithering)
Response Time: 8/10 (Tr / Td)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
SUPRA LED TV STV-LC32T410WL with LCD display LC320DXJ-SFE1, 32 "(81 cm) 16: 9. operation of LEDs depending on the illumination of areas in the scene.This model uses an LED-panel with an edge arrangement of backlighting LEDs - Edge LED.It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in the standard graphic resolution 720p (HD Ready) The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC Graphic processing and digital signal shaping takes place in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p Supported media file formats: MP3, MKV, JPEG.
Speaker power of 10 W (2x5 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, component, VGA, HDMI x2, 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, 1280x1024, 1360x768. The digital tuner is capable of receiving television channels in DVB-T MPEG4, DVB-T2 standards.
Dimensions: With stand 736x496x180 mm, Without stand 736x444x75 mm.
Attention! The LC320DXJ-SFE1 panel of the SUPRA STV-LC32T410WL LED TV is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.

REPAIRING / SERVICING TV SUPRA STV-LC32T420WL

Technical description and composition of the SUPRA STV-LC32T420WL TV, panel type and modules used. The composition of the modules.
SUPRA LED
Model: STV-LC32T420WL
Chassis / Version: V1N10
Panel: LVW320CSOT E155 V2
LED driver (backlight): integrated into MainBoard
PWM LED driver: MP3398A
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6 (RT7738F)
MainBoard: 40-MT31BP-MAA2LG
IC MainBoard: CPU: MT5531NDNT; SPI Flash: 25Q64F; SOUND: RT9108NB
Tuner: 07-600C13-SA2G ST34WN-2T-E
STV-LC32T420WL Specifications
SUPRA STV-LC32T420WL
General recommendations for TV LCD LED repair
Repair and diagnostics of any electronic device, in particular SUPRA STV-LC32T420WL, it is advisable to begin with a careful external examination of the internal and external 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. Swollen electrolytic or sintered capacitors, charred resistors, ring cracks in the soldering of the element terminals - all this can significantly help the master to determine the causes and consequences of the malfunctions in the TV.
In the absence of any signs of operability, when SUPRA STV-LC32T420WL does not turn on and does not signal anything with indicator lamps on the panel, there is a possibility of a malfunction of the TV power module. The power regulator of the control processor on the motherboard may also be faulty with the same manifestations. 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-transition breakdown. Options are possible.
In most cases, breakdowns of keys 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 dry 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.
If SUPRA STV-LC32T420WL has no image, but there is sound, there may be a malfunction of the LVW320CSOT E155 V2 panel backlight LEDs 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 working order.
It is often necessary to disassemble the panel to check the health of the LEDs, as well as the contact connections in the connectors and solders.
When diagnosing, it must be borne in mind that it is impossible to check for an open in the circuit of the LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally a current source.
On the 40-MT31BP-MAA2LG motherboard, in the event of a malfunction, you should first check the operability of all stabilizers or power converters of microcircuits and, if necessary, update the software (software).
When repairing an MB board, you need to check its components SPI Flash: 25Q64F. Defective elements must be replaced. If BGA chips are installed, their failure is usually localized by warming up.
If the TV operates normally from external devices, but does not tune to TV channels, the 07-600C13-SA2G ST34WN-2T-E tuner may be faulty. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals.

Attention to the owners! Attempts to repair the SUPRA STV-LC32T420WL TV yourself are not recommended by the manufacturer and can lead to serious negative consequences!

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC32T420WL V1N10, Main: 40-MT31BP-MAA2LG, Panel: LVW320CSOT E155 V2

 The appearance of the MainBoard 40-MT31BP-MAA2LG is shown in the figure below:
40-MT31BP-MAA2LG
40-MT31BP-MAA2LG can be used in TVs:
ERISSON 32LET82 (Panel LVW320CSOT E145 V2), ERISSON 32LET42T2 (Panel LVW320CSOT E274 V2), ERISSON 32LET41T2 (Panel LVW320CS0T E274 V2), FUSION FLTV-32T21 (Panel LVW320CZOT), SUPRA STV-LC32T420WL (Panel LVW320CSOT E155 V2), SUPRA STV-LC32T850WL (Panel LVW320CSOT E45 V1), SUPRA STV-LC28T662WL (Panel T8-28T3520-LPM20), SUPRA STV-LC24T850WL (Panel 720p HD 1366x768), TELEFUNKEN TF-LED32S29T2 (Panel LVW320CS0T E198 V4), TELEFUNKEN TF-LED24S29T2 (Panel V236BJ1-LE2 Rev.C1), THOMSON T24E12DHU-01B T24E12DHU (Panel LVW240AUDX E2 V6).
Main features of SUPRA STV-LC32T420WL device:
Installed matrix (LED panel) LVW320CSOT E155 V2.
To power the backlight LEDs, a converter combined with the 40-MT31BP-MAA2LG main board is used, controlled by the MP3398A PWM controller.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using PWM SOT23-6 (RT7738F) microcircuits.
MainBoard - the main board (motherboard) is a 40-MT31BP-MAA2LG module, using CPU chips: MT5531NDNT; SPI Flash: 25Q64F; SOUND: RT9108NB and others.
Tuner 07-600C13-SA2G ST34WN-2T-E provides reception of TV programs and tuning to channels.
LED TV SUPRA STV-LC32T420WL with LCD LVW320CSOT, 32 "(81 cm) 16: 9. depending on the illumination of the areas in the scene.This model uses an LED panel with an edge arrangement of backlighting LEDs - Edge LED.It is possible to view broadcasts, films and images in high quality HD at a resolution of 1366x768 pixels in a graphic resolution of 720p (HD Ready). high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC Graphic processing and digital signal shaping occurs in 480i, 480p, 576i, 576p, 720p, 1080i standards Supported media file formats: MP3, JPEG.
Speaker power of 10 W (2x5 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, component, VGA, HDMI x2, USB. 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, 1360x768. The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Dimensions: With stand 735x481x160 mm, Without stand 735x432x83 mm.
Attention! The panel LVW320CSOT E155 V2 of the SUPRA STV-LC32T420WL LED TV is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.

REPAIRING / SERVICING TV SUPRA STV-LC32T430WL

Technical description and composition of the SUPRA STV-LC32T430WL TV, panel type and modules used. The composition of the modules.
SUPRA LED
Model: STV-LC32T430WL
Chassis / Version: V1R08
Panel: C320X16-E9-B (G01)
LED driver (backlight): integrated into MainBoard
PWM LED driver: SO-8
MOSFET LED driver: TO-252
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MOSFET Power: TO-252
MainBoard: TP.MS3463T.PB751
IC MainBoard: SPI Flash GD25Q64C, Audio: TPA3110LD2
Tuner: XF-3SDT-H
STV-LC32T430WL Specifications
SUPRA STV-LC32T430WL
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- TV SUPRA STV-LC32T430WL does not turn on and does not show any signs of turning on, does not respond to control buttons and to the remote control.
In such cases, the main power supply, the AC / DC converter of the mains voltage, which is combined with the MainBoard TP.MS3463T.PB751, may be faulty. Then we recommend measuring its output voltages and, if they are absent, check the serviceability of the power switches (TO-252) and rectifier diodes of the converters for a possible short circuit.
In case of breakdowns in the secondary circuits of the converter, it can usually work in an emergency mode in a short circuit mode, and with a short circuit in the power elements of the primary circuit, the mains fuse or current sensor in the source of the key is most often cut off.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements, which can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying the PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM) PWM SOT23-6, in the absence of external damage and a short circuit between the terminals, are checked by replacing them with a known good one.
- There is no picture, but there is sound and all other functions work. Sometimes, when turned on, the image appears and disappears for a second.
In such cases, the most likely malfunction of the LED panel backlighting elements. The reason can sometimes be in the power supply of the LEDs, but more often in their malfunction (breakdown or breakage), sometimes in the violation of the contact connections of the LED strips.
When diagnosing, it must be borne in mind that it is impossible to check for an open in the circuit of the LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally a current source. By opening the panel, you can check each LED separately. Typically, Chinese multimeters light up one 3-volt LED slightly if the probes are connected to it in the forward direction. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of LED health. In the event of a malfunction of the LED, its zener diode will either be cut off or broken into the K / Z.
- The TV does not turn on, the indicator signals standby or operating mode, or blinks.
Repair or diagnostics of the TP.MS3463T.PB751 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). In cases of complex MB (SSB) repairs and with the necessary skills and equipment, it may sometimes be necessary to replace its SPI Flash GD25Q64C, Audio: TPA3110LD2 chips and other possible faulty components. Malfunctions associated with the use of BGA soldering technologies are usually easily diagnosed by the warm-up method.
Before changing the XF-3SDT-H tuner, if it is not possible to tune to TV channels, you should make sure that there are supply voltages, which must be measured at the corresponding tuner terminals and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be monitored with an oscilloscope

Attention to TV owners! Attempts to repair SUPRA STV-LC32T430WL yourself are not recommended by the manufacturer and can lead to serious negative consequences!

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC32T430WL V1R08, Main: TP.MS3463T.PB751, Panel: C320X16-E9-B (G01)

 The appearance of MainBoard TP.MS3463T.PB751 is shown in the figure below:
TP.MS3463T.PB751
Main features of SUPRA STV-LC32T430WL device:
Installed matrix (LED panel) C320X16-E9-B (G01).
To power the backlight LEDs, a converter combined with the TP.MS3463T.PB751 main board is used, controlled by the SO-8 PWM controller. TO-252 switches are used as power elements of the LED driver.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using SOT23-6 PWM microcircuits and TO-252 power switches.
MainBoard - the main board (motherboard) is a TP.MS3463T.PB751 module, using SPI Flash GD25Q64C chips, Audio: TPA3110LD2 and others.
Tuner XF-3SDT-H provides reception of television programs and tuning to channels.
SUPRA LED TV STV-LC32T430WL with LCD C320X16-E9-B, 32 "(81 cm) 16: 9 format diagonal. The required screen brightness of 250 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 80,000: 1 is achieved special control of the LEDs depending on the illumination of areas in the scene. The display technology of the model uses LED LED backlight. It is possible to view programs and films and images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). Supported file formats multimedia: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power of 16 W (2x8 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, component, VGA, HDMI x3, USB. A headphone output is provided. The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Dimensions: With stand 1235x758x284 mm, Without stand 713x435x86 mm.
Attention! Panel C320X16-E9-B (G01) SUPRA STV-LC32T430WL LED TV is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!

It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable ................................ .........................................

REPAIRING / SERVICING TV SUPRA STV-LC32T440WL

Technical description and composition of the SUPRA STV-LC32T440WL TV, panel type and modules used. The composition of the modules.
SUPRA LED
Model: STV-LC32T440WL
Chassis / Version: TP.S512.PB83
Panel: C320X14-E13-H
LED driver (backlight): integrated into MainBoard
PWM LED driver: SN510P
MOSFET LED driver: AOD4454
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: TP.S512.PB83
IC MainBoard: CPU: S2T512, SPI Flash: GD25Q64
Tuner: R840
STV-LC32T440WL Specifications
SUPRA STV-LC32T440WL
General recommendations for TV LCD LED repair
Repair of electronic equipment usually begins with its external examination and diagnosis of a malfunction. In this case, you should inspect all the internal components of the SUPRA STV-LC32T440WL TV, as well as the external elements of the case. 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 most cases, the repairman can guess about the causes of the defect and the possible consequences by the characteristic signs of typical defects in TVs, for example, the formed ring cracks in the soldering of the element terminals, swollen capacitors of the rectifier filter, charred resistors and other circuit elements.
If the STV-LC32T440WL TV does not turn on, does not emit any sounds when turned on, as well as no indicators on the front panel are lit or blinking, there is a high probability of a malfunction in the power module. In some cases, only the regulator or power converter of the control processor may be faulty, which is typical for some SUPRA models. In the absence of swollen capacitors of the secondary rectifier filter, diagnostics of the power supply should begin with checking the fuse and, if it breaks, it is necessary first of all to check all power semiconductor elements of the primary circuit - diodes and transistors for the likelihood of an avalanche or thermal breakdown.
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 controller microcircuit or breaks in resistors in its strapping.
If, when SUPRA STV-LC32T440WL is turned on, there is no image, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the C320X14-E13-H panel backlight LED circuit, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the common power supply.
It is often necessary to disassemble the panel to check the health of the LEDs, as well as the contact connections in the connectors and solders.
An open circuit in the LED rows connected in series cannot be detected with a multimeter or tester without disassembling the panel. It takes several tens of volts to open all the junctions, and it is best to use a current source for such purposes.
On the TP.S512.PB83 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).
Complex repair of MB (SSB) board is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the Flash GD25Q64 elements. Malfunctions in BGA chips are usually easy to detect by warm-up.

Attention to users! Self-repair of the SUPRA STV-LC32T440WL TV without appropriate qualifications and experience can lead to its complete non-repairability!

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC32T440WL, Main: TP.S512.PB83, Panel: C320X14-E13-H


DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    MainBoard TP.S512.PB83

 The appearance of the MainBoard TP.S512.PB83 is shown in the figure below:
TP.S512.PB83
TP.S512.PB83 can be used in TVs:
AKAI LEA-39V51P (Panel LC390TA2A 902-P05-390H ), DEXP 40A7000 (Panel C400F13-E2-C), DEXP F39B7100E (Panel T390HVN04.0 CX390DLEDM), DEXP H32B7000C (Panel T320XVN02.9 C320X14-E2-A), DEXP F42B7000ED (Panel CX420DLEDM), DEXP F32C7000B (Panel BOEI320WU1), DEXP F32C7100B/W F32C7100 (Panel BOEI320WU1), DEXP 32A7000 (Panel BOEI320WU1), DEXP 42A7000 (Panel CX420DLEDM), DEXP F32B7000B (Panel BOEI320WU1), DEXP H39D7000E (Panel CX390DLEDM), DEXP F40B7000C (Panel C400F13-E2-C), DEXP H32B3200CD (Panel HV320WX2-201), HAIER LE28F6000T (Panel A275HD1A01-2 / LVW280CSDO E2 V2), HAIER LE32F6000T (Panel ST3151A05-8 LVW320CSDX E13 V2), MYSTERY MTV-4025LT2 (Panel CX400DLEDM), SHIVAKI STV-32LED13 (Panel SV320SHD PDL320TU2A X41), SHIVAKI STV-42LED16 (Panel V420HJ-P01), SHIVAKI STV-32LED14 (Panel CX315DLEDM AJ32TO3), SHIVAKI STV-40LED13W (Panel V400HJ6PE1-C2), SHIVAKI STV-32LED15 (Panel HV320WHB-N80), SUPRA STV-LC32T440WL (Panel C320X14-E13-H), SUPRA STV-LC32T900WL (Panel LC320TU3A), SUPRA STV-LC40T900FL (Panel 1080p Full HD 1920x1080), THOMSON T32D15DH-01B (Panel LVW320CSDX E13 V30), THOMSON T28D15DH-01B (Panel LVW280CSDE E3 V5), THOMSON T32D16DH-01W T32D16DH (Panel LVW320CSDX E19 V28), THOMSON T43D16SF-01B T43D16SF (Panel LVF430LGDO E2 V18).
Main features of SUPRA STV-LC32T440WL device:
Installed matrix (LED-panel) C320X14-E13-H.
To power the backlight LEDs, a converter combined with the TP.S512.PB83 main board is used, controlled by the SN510P PWM controller. The keys of the AOD4454 type are used as power elements of the LED driver.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a TP.S512.PB83 module, using CPU: S2T512 chips, SPI Flash: GD25Q64 and others.
The R840 tuner provides reception of television programs and tuning to channels.
SUPRA LED TV STV-LC32T440WL with LCD C320X14-E13-H, 32 "(81 cm) in 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 100,000: 1 is achieved special control of the LEDs depending on the illumination of areas in the scene.This model uses an LED-panel with an edge arrangement of backlight LEDs - Edge LED.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 digital signal shaping occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, MPEG4 , MKV, JPEG.
Speaker power of 16 W (2x8 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, component, VGA, HDMI x3, USB. 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, 1360x768. The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Dimensions: With stand 1235x758x284 mm, Without stand 713x435x86 mm.
Attention! SUPRA STV-LC32T440WL LED TV panel C320X14-E13-H is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.

REPAIRING / SERVICING TV SUPRA STV-LC32T500WL

Technical description and composition of the SUPRA STV-LC32T500WL TV, panel type and modules used. The composition of the modules.
SUPRA LED
Model: STV-LC32T500WL
Chassis / Version: TP.SIS231.PT71
Panel: LC320TU3A
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): integrated into MainBoard
MainBoard: TP.SIS231.PT71
IC MainBoard: Flash 25Q64
STV-LC32T500WL Specifications
SUPRA STV-LC32T500WL
General recommendations for TV LCD LED repair
Repair of the SUPRA STV-LC32T500WL TV should begin with a fault diagnosis, which involves a careful examination of the external and internal elements of the device. According to some external signs of a change in the state of some elements, sometimes it becomes possible to make assumptions about the nature of the defect, as well as to determine the further direction of troubleshooting. Experienced repairers 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.
In the case when the STV-LC32T500WL does not turn on, does not respond to the remote control and front panel buttons, does not blink lights and does not show any signs of operability, the power module is probably faulty in this case. If it is working properly with such manifestations, it is necessary to check the processor power regulator (converter) on the motherboard. Diagnostics and repair of the common power supply should always begin with checking the mains fuse and the state 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.
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, 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 turning 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 LED driver (the power converter for the LED backlight of the LC320TU3A panel). In such cases, the common power module is also subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the LED driver should be checked.
A malfunction in the backlight circuits often occurs due to an open circuit in the power supply circuit of the LED lines. It is required to disassemble the panel and check the LEDs themselves, the ration of their outputs, as well as the reliability of the connections in the connectors and the ration of the connector pins.
To identify an open circuit in the LED lines without disassembling the panel, a current source is required. It is impossible to open the junctions connected in series with a simple multimeter; a voltage of several tens of volts is required.
Repair or diagnostics of the TP.SIS231.PT71 motherboard should begin with checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software).
In some cases, to repair the MB (SSB) board, it may be necessary to replace the Flash 25Q64 chips with new or known good ones. In cases where BGA technologies are used, defects are usually localized by heating.

Attention to the owners! Attempts to repair the SUPRA STV-LC32T500WL TV yourself are not recommended by the manufacturer and can lead to serious negative consequences!

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC32T500WL, Main: TP.SIS231.PT71, Panel: LC320TU3A

 The appearance of the MainBoard TP.SIS231.PT71 is shown in the figure below:
TP.SIS231.PT71
TP.SIS231.PT71 can be used in TVs:
Haier LE40B7000C (Panel V390HJ1-PE1), HAIER LE39B7000C (Panel T390XVN01.0 ), SUPRA STV-LC32T500WL (Panel LC320TU3A), SUPRA STV-LC40T900WL (Panel 720p HD 1366x768).
Main features of SUPRA STV-LC32T500WL device:
The matrix (LED-panel) LC320TU3A is installed.
To power the backlight LEDs, a converter combined with the TP.SIS231.PT71 main board is used.
The power module is combined with the MainBoard and is made according to the AC / DC flyback converter circuit.
MainBoard - the main board (motherboard) is a TP.SIS231.PT71 module, using Flash 25Q64 chips and others.
Additional technical information about the panel:
Brand: PANDA
Model: LC320TU3A
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: UV2A, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare, Hard coating (3H)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 6.9% (with Polarizer)
Contrast Ratio: 5000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 7 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
SUPRA LED TV STV-LC32T500WL with LCD LC320TU3A, 32 "(81 cm) 16: 9. depending on the illumination of the areas in the scene.This model uses an LED-panel with an edge arrangement of backlighting LEDs - Edge LED.It is possible to view broadcasts, films and images in high quality HD at a resolution of 1366x768 pixels in the standard graphic resolution 720p (HD Ready). high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i. Supported multimedia file formats: MP3, MPEG4, JPEG.
Speaker power of 16 W (2x8 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, component, SCART, VGA, HDMI x3, USB x2. 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, 1360x768. The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Dimensions: With stand 736x497x180 mm, Without stand 736x444x76 mm.
Attention! The LC320TU3A panel of the SUPRA STV-LC32T500WL LED TV is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.

REPAIRING / SERVICING TV SUPRA STV-LC32T550WL

Technical description and composition of the SUPRA STV-LC32T550WL TV, panel type and modules used. The composition of the modules.
SUPRA LED
Model: STV-LC32T550WL
Chassis / Version: V1R10
Panel: LSC320AN02
LED backlight: CRH-P32CA3535T030751U-REV1.0
LED driver (backlight): integrated into MainBoard
PWM LED driver: SN51DP
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: TP.MS3463S.PB801
IC MainBoard: MSD3463GU, GD25Q64, OB6220VP
Tuner: XF-3SDT-H
STV-LC32T550WL Specifications
SUPRA STV-LC32T550WL
General recommendations for TV LCD LED repair
Possible malfunctions
- SUPRA STV-LC32T550WL TV does not turn on at all. Control lamps do not light up or blink. The TV on the remote control and control panel buttons does not respond.
First of all, in such cases, you should make sure that the common switching power supply (SMPS) - the AC / DC voltage converter of the mains voltage - is working. All source elements in this TV model are located on the MainBoard TP.MS3463S.PB801. It is necessary to measure the output voltages in its secondary circuits, and in the event of their complete absence, the serviceability of the power switches and rectifier diodes should be checked for a possible breakdown (short circuit).
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in an emergency mode of short circuit without output voltages, and with a short circuit in the elements of the primary circuit, the mains fuse most often breaks off immediately and less often the current sensor in the source of the key.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers PWM SOT23-6, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or known to be working properly.
- There is no image, there is sound, it reacts to the remote control. Or, immediately after switching on for a second, the image may appear and immediately disappear.
In some of these cases, the malfunction is caused by the lack of display backlighting. The reason may be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
To check the health of the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can check each LED separately with a simple Chinese multimeter (powered by 9 volts) in the P-N transition test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black one to its cathode, then the 3-volt LED will light up slightly, and in the opposite direction you can detect the transition of the emergency zener diode. The serviceability of the PN junction of the Zener diode indirectly indicates the serviceability of the LED-a
- The TV does not go into operation, does not respond to the remote control. The indicator on the front panel is on or blinking.
Repair or diagnostics of the TP.MS3463S.PB801 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Repair of the board and replacement of microcircuits MSD3463GU, GD25Q64, OB6220VP are performed with the necessary equipment and the corresponding element base. Malfunctions associated with the use of BGA soldering technologies can be localized by warming up.

If you suspect a malfunction of the XF-3SDT-H tuner, first of all, you need to make sure that the software is correct, as well as the presence of the necessary levels of supply voltages and pulses of data exchange with the processor via the I2C bus at the corresponding terminals of the tuner.

Attention to users! Self-repair of the SUPRA STV-LC32T550WL TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!

DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL ------->  Chassis TP.MS3463S.PB801

 
DOWNLOAD FIRMWARE FOR SPI FLASH  -------->   SUPRA STV-LC32T550WL, Main: TP.MS3463S.PB801, Panel: LSC320AN02



The appearance of the MainBoard TP.MS3463S.PB801 is shown in the figure below:
TP.MS3463S.PB801
TP.MS3463S.PB801 can be used in TVs:
AKAI LEA-40V35M (Panel LSC400HM06), AKIRA 32LED38T2P (Panel ST3151A05-8), AKIRA 32LED02T2M (Panel ST3151A04-9 Ver.2.1), BBK 32LEM-1029/TS2C (Panel C320X16-E18-H), BBK 39LEM-1033/TS2C (Panel C390X15-E8-A G01), BBK 32LEM-1026/TS2C (Panel CX315DLEDM ST3151A05-8), BBK 32LEM-1027/TS2C (Panel ST3151A05-8 / CX315DLEDM), DEXP F43C7100K (Panel LC430DUY (SH)(A1)), DEXP F42B7000M (Panel V420HJ2-P01), DEXP F43C7000C (Panel C430F14-E1-L / LC430DUY), DEXP F40B7100K (Panel LSC400HN02-G02 40N06-L-HPX1F1), DEXP H28C7100C (Panel C275X15-E1-H (G31)), DEXP H32C7300K (Panel LSC320AN02), DEXP H32D7100C (Panel ST3151A05-8 Ver2.5), DEXP H28D7300K (Panel HV280WX2-260), ERISSON 32LES78T2W (Panel KM0320LDRH0037), ERISSON 32LEE30T2 (Panel LK315T3HB87-12V), SUPRA STV-LC32T560WL (Panel LSC320AN10), SUPRA STV-LC32T550WL (Panel LSC320AN02), SUPRA STV-LC40T500WL (Panel C39X15-E7-A), TELEFUNKEN TF-LED32S45T2 (Panel LK315T3HB87-12V), THOMSON T39D20DH-01B (Panel T390XVN01.0).
Main features of SUPRA STV-LC32T550WL device:
Installed matrix (LED panel) LSC320AN02.
To power the backlight LEDs, a converter combined with the TP.MS3463S.PB801 main board is used, controlled by the SN51DP PWM controller.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a TP.MS3463S.PB801 module, using MSD3463GU, GD25Q64, OB6220VP and others.
Tuner XF-3SDT-H provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LSC320AN02-0
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: PVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 2%), Hard coating (2H)
Glass Depth: 0.70 + 0.70 mm
Transmissivity: 6.5% (with Polarizer)
Contrast Ratio: 5000: 1
Display Colors: 16.7M (8-bit), CIE1931 69%
Response Time: 20 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
SUPRA LED TV STV-LC32T550WL with LCD LSC320AN02, 32 "(81 cm) 16: 9. depending on the illumination of the areas in the scene. The display technology of the model uses LED backlighting. It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in the 720p (HD Ready) graphics standard. 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, MKV, JPEG.
Speaker power of 10 W (2x5 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, component, VGA, HDMI x3, USB. 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, 1360x768. The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Overall dimensions: 795x500x160 mm.
Attention! The panel LSC320AN02 of the SUPRA STV-LC32T550WL LED TV is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.

REPAIRING / SERVICING TV SUPRA STV-LC32T560WL

Technical description and composition of the SUPRA STV-LC32T560WL TV, panel type and modules used. The composition of the modules.
SUPRA LED
Model: STV-LC32T560WL
Chassis / Version: TP.MS3463S.PB801
Panel: LSC320AN10
LED backlight: JL.D32061235-083IS-F
T-CON: 16Y_GH11MB7S4LV0.2
LED driver (backlight): integrated into MainBoard
PWM LED driver: SN51DP
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: TP.MS3463S.PB801
IC MainBoard: CPU: MSD3463GU, SPI Flash: GD25Q64, AUDIO: OB6220VP
Tuner: XF-3SDT-H (R840)
STV-LC32T560WL Specifications
SUPRA STV-LC32T560WL
General recommendations for TV LCD LED repair
Possible malfunctions
- SUPRA STV-LC32T560WL does not turn on and does not show any signs of operability at all. Does not blink indicators and does not respond to control buttons.
A malfunction in such cases should be looked for in the elements of the power source - the mains voltage converter (AC / DC), which is located on the main board MainBoard TP.MS3463S.PB801. It is necessary to make sure that its output voltages are present and, if they are completely absent, check the power switches and rectifier diodes for a possible short circuit.
In case of breakdowns of semiconductors in the secondary circuits, the converter can usually work in an emergency mode in a short-circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse often breaks.
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 regulators (PWM) PWM SOT23-6, if they have no visible damage to the case and an open short circuit between the pins, are usually checked by replacing.
- There is no image, there is sound, it reacts to the remote control. Or, immediately after switching on for a second, the image may appear and immediately disappear.
A malfunction is usually in these cases most likely in the backlight units of the display matrix. The reason may be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
It is impossible to check the LED bars for a break without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters tend to light a single 3V LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as an indicator of serviceability. In faulty LEDs, the zener diode will either be cut off, or pierced in the K / Z.
- The TV does not go into operation, does not respond to the remote control. The indicator on the front panel is on or blinking.
Repair or diagnostics of the TP.MS3463S.PB801 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). If it is not possible to replace the MB (SSB) board, you need to check the health of its elements - CPU: MSD3463GU, SPI Flash: GD25Q64, AUDIO: OB6220VP. Defective components must be replaced.
If the TV operates normally from external devices, but does not tune into TV channels, the XF-3SDT-H (R840) tuner may be faulty. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals. It is also necessary to make sure that the data exchange between the tuner and the processor is possible via the I2C bus. Sometimes the reason for the inoperability of the tuner may be a software failure.

Owners of the STV-LC32T560WL TV are advised to contact only qualified specialists with the necessary experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!

DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL---------> Chassis TP.MS3463S.PB801

 The appearance of the MainBoard TP.MS3463S.PB801 is shown in the figure below:
TP.MS3463S.PB801
TP.MS3463S.PB801 can be used in TVs:
AKAI LEA-40V35M (Panel LSC400HM06), AKIRA 32LED38T2P (Panel ST3151A05-8), AKIRA 32LED02T2M (Panel ST3151A04-9 Ver.2.1), BBK 32LEM-1029/TS2C (Panel C320X16-E18-H), BBK 39LEM-1033/TS2C (Panel C390X15-E8-A G01), BBK 32LEM-1026/TS2C (Panel CX315DLEDM ST3151A05-8), BBK 32LEM-1027/TS2C (Panel ST3151A05-8 / CX315DLEDM), DEXP F43C7100K (Panel LC430DUY (SH)(A1)), DEXP F42B7000M (Panel V420HJ2-P01), DEXP F43C7000C (Panel C430F14-E1-L / LC430DUY), DEXP F40B7100K (Panel LSC400HN02-G02 40N06-L-HPX1F1), DEXP H28C7100C (Panel C275X15-E1-H (G31)), DEXP H32C7300K (Panel LSC320AN02), DEXP H32D7100C (Panel ST3151A05-8 Ver2.5), DEXP H28D7300K (Panel HV280WX2-260), ERISSON 32LES78T2W (Panel KM0320LDRH0037), ERISSON 32LEE30T2 (Panel LK315T3HB87-12V), SUPRA STV-LC32T560WL (Panel LSC320AN10), SUPRA STV-LC32T550WL (Panel LSC320AN02), SUPRA STV-LC40T500WL (Panel C39X15-E7-A), TELEFUNKEN TF-LED32S45T2 (Panel LK315T3HB87-12V), THOMSON T39D20DH-01B (Panel T390XVN01.0).
Main features of SUPRA STV-LC32T560WL device:
Installed matrix (LED panel) LSC320AN10.
Matrix control uses Timing Controller (T-CON) 16Y_GH11MB7S4LV0.2.
To power the backlight LEDs, a converter combined with the TP.MS3463S.PB801 main board is used, controlled by the SN51DP PWM controller.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a TP.MS3463S.PB801 module, using CPU chips: MSD3463GU, SPI Flash: GD25Q64, AUDIO: OB6220VP and others.
Tuner XF-3SDT-H (R840) provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LSC320AN10
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: PVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare
Glass Depth: 0.50 + 0.50 mm
Contrast Ratio: 4000: 1
Display Colors: 16.7M (8-bit), CIE1931 68%
Response Time: 20 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
SUPRA LED TV STV-LC32T560WL with LCD LSC320AN10, diagonal size 32 "(81 cm) 16: 9. The required screen brightness of 220 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 80000: 1 is achieved by special control of LED operation depending on the illumination of the areas in the scene. The display technology of the model uses LED backlighting. 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). Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power of 10 W (2x5 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, component, VGA, HDMI x3, USB. A headphone output is provided. The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Dimensions: With stand 1235x758x284 mm, Without stand 713x435x86 mm.
Attention! SUPRA STV-LC32T560WL LED TV panel LSC320AN10 is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.