Technical description and composition of the SUPRA STV-LC2622W TV, panel type and modules used. The composition of the modules.SUPRA
Model: STV-LC2622W
Chassis / Version: V2J12
Panel: M260TWR1
MainBoard: T.MT8223.3B
IC MainBoard: SPI FLASH: W25Q16, EEPROM: 24C32
Tuner: F20WT-3DDR-E
Control: Login to the service: MENU 1147
STV-LC2622W Specifications
SUPRA STV-LC2622W
General recommendations for TV LCD repair
Repair of a SUPRA TV with a V2J12 chassis should begin with a careful external examination of all its constituent elements and modules. According to some external signs of a change in the state of some elements, it sometimes becomes possible to make assumptions about the nature of the defect, as well as to determine the further direction of troubleshooting. 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.
In the absence of any signs of operability, when SUPRA STV-LC2622W does not turn on and does not signal anything with the control lamps on the panel, there is a possibility of a malfunction of the TV power module. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. Diagnostics and repair of the common power supply should always begin with checking the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
As a rule, switches in switching power supplies (SMPS) are quite reliable and rarely fail without reasons that should be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM microcircuit is checked by replacing it with a known good one.
If, when SUPRA STV-LC2622W is turned on, there is no image, or it appears for a second and disappears completely, but there is sound, most likely either the backlight lamps or their power converter (inverter) are faulty. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the common power supply. All necessary precautions must be taken when disabling the inverter protection during diagnostics and do not leave it disabled after repair is completed.
Repair or diagnostics of the T.MT8223.3B motherboard should start with checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - SPI FLASH: W25Q16, EEPROM: 24C32 and replace failed chips with new ones. Some malfunctions can be associated with the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.
Owners and users of the SUPRA STV-LC2622W TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC2622W (V2J12),MAIN T.MT8223.3B, Panel M260TWR1
In case of malfunctions in the SPI FLASH software produced by Winbond, we recommend changing the microcircuit itself to a new one. Sometimes Winbond microcircuits can recover for a while after high-temperature exposure, for example, warming up with a soldering station or a lighter, which is sometimes enough to read its contents.
Repair MainBoardThe appearance of MainBoard T.MT8223.3B is shown in the figure below:
T.MT8223.3B
T.MT8223.3B can be used in TVs:
HYUNDAI H-LCD3210 (Panel LTA320AP02), HYUNDAI H-LCD3212 (Panel LTA320AP02), SUPRA STV-LC2622W (Panel M260TWR1).
Main features of the SUPRA STV-LC2622W device:
Installed matrix (LCD panel) M260TWR1.
The required supply voltage for all nodes of the TV SUPRA STV-LC2622W provides a switching power supply.
MainBoard - the main board (motherboard) is a T.MT8223.3B module, using SPI FLASH: W25Q16, EEPROM: 24C32 and others.
The F20WT-3DDR-E tuner provides TV reception and channel tuning.
Information from an alternative source:
SUPRA STV-LC2622WD Version V2J11
Panel Type (Matrix): M260TWR1,
Motherboard: T.MT8223.3B 10285, 25Q16BVSIG, 432A-2GLI (24C32), IT6633E-P, R2A15122, CBT3257AD х2, CD4052, Tuner: F20WT-3DDR-E
PSU & Inverter: MIP260K-HA rev 1.0, LD7576AGR, 2SK3115, MP1006ES, D454A х2, D413A, AO4616
Additional technical information about the panel:
Brand: IVO
Model: M260TWR1 R1
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.7M (8-bit), 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: 12.0V
LCD TV SUPRA STV-LC2622W with LCD M260TWR1, 26 "(66 cm) 16: 9. Brightness of the screen of 500 cd / m2 is provided by CCFL (EEFL) fluorescent lamps. Contrast is the ratio of maximum brightness to minimum brightness 1000: 1 Dynamic contrast ratio of 2000: 1 achieved by special control of the backlight It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in a graphic resolution of 720p (HD Ready) .Input high-frequency or video signal is decoded in analog systems PAL , SECAM, NTSC Graphic processing and digital signal shaping takes place in the 480i, 480p, 576i, 576p, 720p, 1080i standards.
The power of the sound system 16 W (2x8 W) provides two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, S-Video, component, SCART x2, RGB, VGA, HDMI x2. 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.
The power consumed by the TV in operating mode from the network is 120 watts.
Overall dimensions: 665x478x210 mm.
The mass of the TV: 12.2 kg.
Attention! SUPRA STV-LC2622W LCD TV panel M260TWR1 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen surface to avoid permanent damage to the LCD panel!
