Technical description and composition of the TV SUPRA STV-LC2204W, type of panel and applicable modules. The composition of the modules.SUPRA
Model: STV-LC2204W
Chassis / Version: V1I05
Panel: CLAA216WA01
Inverter (backlight): MLT019-C REV: 1.2
Power Supply (PSU): MLT019-C REV: 1.2
PWM Power: FDS6958
MOSFET Power: KA7500
MainBoard: JUG7.820.510-2
IC MainBoard: Cpu: MST718BE-LF, Spi Flash: 25X42, Eeprom: 24LC32, IF-PLL-Demodulator: TDA9885TS, Audio Processor: CSC2314F, Audio: TEA2025B
Tuner: TAF6-C2I21VH 9511AF
Technical Specifications STV-LC2204W
SUPRA STV-LC2204W
General repair guidelines for TV LCD
It is advisable to start repairing all electronic devices, including the SUPRA TV, based on the chassis E322995 2LE05177A1 with an external examination of its external and internal elements. In some cases, visible external damage to the elements can suggest the direction of troubleshooting and localization of the defect even before the start of the necessary measurements at the control points of the nodes of electronic circuits. If ring cracks are detected in the soldered terminals of the elements or dangling connecting tracks, swollen capacitors or charred resistors - all this can be characteristic signs of the causes or consequences of an already known typical malfunction.
If the power module AYP172003 malfunctions, the external manifestations may be different, for example, SUPRA STV-LC2204WD does not turn on at all and there is no indication of the indicator lights on the front panel. With the same symptoms, the stabilizer (converter) of the power supply to the control processor may be malfunctioning. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors for the possibility of an avalanche or thermal breakdown.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no 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 dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM chip from the manufacturer.
If, when you turn on the TV, the image appears and immediately disappears, or is absent initially when you turn on, but there are sound and other functions work, there is a high probability of a malfunction of the inverter (power converter for the backlight). In such cases, the lamps, the inverter and the common power module should be checked, in which the electrolytic capacitors of the rectifier filter supplying the inverter should be checked.
When repairing the IV0190415 REV: 00 inverter, it is often necessary to disable the protection for diagnostics, which, for the purpose of fire safety, turns it off in any emergency situation, for example, during a malfunction or uneven wear of the lamps, which makes it difficult to find a defect.
Repair of the motherboard E322995 2LE05177A1 must begin with the diagnosis and verification 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 complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its chips MST719DU-LF, CSC2314F and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Once again, remind users! Attempts to self-repair a SUPRA STV-LC2204WD TV without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> JUG7.820.510-2 MST718BE
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 on TVs:
SUPRA STV-LC1904W (Panel HT190WG1-600), SUPRA STV-LC2204W (Panel CLAA216WA01), SUPRA STV-LC1911WD (Panel HT190WG1-600).
Main features of the SUPRA STV-LC2204W device:
Installed matrix (LCD panel) CLAA216WA01.
To power the backlight used inverter MLT019-C.
The necessary supply voltages for all nodes of the TV SUPRA STV-LC2204W are generated by the MLT019-C power supply module or its analogs using FDS6958 microchips and KA7500 type power switches.
MainBoard - the main board (motherboard) is a JUG7.820.510-2 module, using Cpu chips: MST718BE-LF, Spi Flash: 25X42, Eeprom: 24LC32, IF-PLL-Demodulator: TDA9885TS, Audio Processor: CSC2314F, Audio: TEA2025B and others.
The TAF6-C2I21VH 9511AF tuner provides television reception and channel tuning.
Information from an alternative source:
SUPRA STV-LC2204WD
Motherboard: E322995 2LE05177A1, MST719DU-LF, CSC2314F, Tuner: TAF6-C2I21VH 9A15AF
Invertor: IV0190415 REV: 00.
PSU: AYP172003 Schematic
Additional technical information about the panel:
Brand: CPT
Model: CLAA216WA01
Type: a-Si TFT-LCD, Panel
Diagonal size: 21.6 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 477.417x268.416 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 350 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 5 (Tr + Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
LCD TV SUPRA STV-LC2204W with LCD display LTA216AT01, diagonal size 22 "(55 cm) in 16: 9 format. The brightness of the screen is 300 cd / m² with fluorescent lights CCFL (EEFL). Contrast - the ratio of maximum brightness to minimum is 1000: 1. You can watch broadcasts and movies and images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i. Stereo sound is realized by two built-in speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, S-Video, component, VGA. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768.
Overall dimensions: With stand 876x653x180 mm, Without stand 1054x791x120 mm.
Attention! The LTRA216AT01 panel of a SUPRA STV-LC2204W LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen surface to avoid permanent damage to the LCD panel!
