Technical description and composition of the THOMSON 32D12 TV, panel type and modules used. The composition of the modules.THOMSON LED
Model: 32D12
Chassis / Version: 40-MS82VG-MAE2LG
Panel: DTW0315CK06-D
LED driver (backlight): integrated into PSU
Power Supply (PSU): SHP3206A-101H
PWM Power: MP1006, LD7536,
MOSFET Power: FQPF5N60C, NCP1607
MainBoard: 40-MS82VG-MAE2LG
IC MainBoard: MST6E182VS-LF-Z1. SPI Flash: 25Q32BVSIG
Tuner: TDQ-3CB 07-380F15-NFHG
Specifications L32D12
THOMSON 32D12
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- The THOMSON 32D12 TV does not turn on and does not show any signs of turning on, does not respond to the control buttons and to the remote control.
Most often, with similar manifestations, the main power module SHP3206A-101H turns out to be faulty. Its output voltages should be measured and, in their absence, the serviceability of the power switches (FQPF5N60C, NCP1607) and rectifier diodes in the converters should be checked for possible breakdown.
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 the current sensor at the source of the key often breaks off.
Breakdown of power switches (MosFet) in switching sources is sometimes caused by malfunctions of other circuit elements, for example, in the circuits supplying the PWM controller, frequency setting or damper, as well as in the circuits of Negative Feedback (OOS) stabilization. PWM regulators (PWM) MP1006, LD7536, if they do not have visible damage to the case and an outright short circuit between the pins, are usually checked by replacement.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately
The most likely problem in these cases is a malfunction of the LED backlight. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
To test the LED strips, in order to open all the transitions of the LEDs, several tens of volts or more are needed; it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED junctions in forward bias, you can sometimes detect the presence of a protective zener diode PN junction by connecting the probes in the opposite direction. If the zener diode is cut off or broken in K / Z, then the LED is faulty and needs to be replaced.
- The TV does not turn on, the indicator signals the standby or operating mode, or blinks.
Repair or diagnostics of the 40-MS82VG-MAE2LG 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). In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - MST6E182VS-LF-Z1. SPI Flash: 25Q32BVSIG 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 (detected 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 TDQ-3CB 07-380F15-NFHG tuner and update the software. I2C communication pulses must be monitored with an oscilloscope.
The lack of an image in the presence of a signal from THOMSON L32D12 is often caused by a malfunction of the display backlight. Moreover, the problem can be both inside the LCD panel (matrix) LTA320AP07, for example, a malfunction of the CCFL (EEFL) lamps, and outside in their power source - the inverter.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.
Often, repairing the backlight requires disassembling the LTA320AP07 LCD panel - a painstaking process that requires special attention and accuracy from the technician. In such cases, there is a possibility, with the slightest negligence, to damage the glass or loops and the TV may become unrepairable.
We strongly do not recommend doing such work to owners of TVs and craftsmen who do not have experience in repairing LCD panels! Moreover, at home (at the owner's home).
If there is no image in the presence of backlight, the screen becomes slightly lighter when turned on, and if the TV is open, the light from the lamps can be seen through the holes in the panel case.
In this case, there may be a malfunction inside the panel, damage to strips, loops, the T-CON board (Timing Controller) may be defective. But the main board MainBoard V8-4MT2302-LF1V213 often turns out to be faulty, a software failure is also possible.
In such cases, the master first of all needs to check the main supply voltage of the panel at the LVDS connector, the fuses on the T-CON board or the panel brackets, as well as the supply and reference voltages for line and column drivers - VGH, VGL, Vcom.
If all of the above measurements are within the normal range, then the oscilloscope should track the passage of LVDS signals from MainBoard V8-4MT2302-LF1V213, as well as synchronizing signals from T-CON to loops with drivers.
Attention to users! Self-repair of the THOMSON 32D12 TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> THOMSON 32D12E , Main: 40-MS82VG-MAE2LG, Panel: DTW0315CK06-D , Tuner: TDQ-3CB, PSU: SHP3206A-101H
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> SHP3206A-101H Power supply
The appearance of the MainBoard 40-MS82VG-MAE2LG is shown in the figure below:40-MS82VG-MAE2LG
40-MS82VG-MAE2LG can be used in TVs:
HYUNDAI H-LED32V8 (Panel T315XW06 V.8), HYUNDAI H-LED19V8 (Panel M185XW01), MYSTERY MTV-1623LW (Panel N156BGE-L21), SUPRA STV-LC16850WL (Panel N156BGE-L21 REV.C1), THOMSON 32D12 (Panel DTW0315CK06-D).
External view of the power supply
The main features of the THOMSON 32D12 device:
Installed matrix (LED panel) DTW0315CK06-D.
A converter combined with a power supply is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the THOMSON 32D12 TV is carried out by the SHP3206A-101H power module, or its analogs using MP1006, LD7536 microcircuits, and power switches such as FQPF5N60C, NCP1607.
MainBoard - the main board (motherboard) is a 40-MS82VG-MAE2LG module, using MST6E182VS-LF-Z1 microcircuits. SPI Flash: 25Q32BVSIG and others.
Tuner TDQ-3CB 07-380F15-NFHG provides reception of television programs and tuning to channels.
THOMSON L32D12 LCD TV with LTA320AP07 LCD 32 "(81 cm) 16: 9 format. 450 cd / m² screen brightness provided by CCFL (EEFL) backlighting. Can be viewed in high quality HD at 1366x768 pixels in 720p (HD Ready) Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC Digital signal formation (graphic format) is performed in 480i, 480p, 576i, 576p, 720p, 1080i standards Supported multimedia formats: MP3, MPEG4 , MKV, JPEG.
Speaker power 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), VGA, HDMI, USB. A headphone jack is provided. A standard VGA (D-Sub 15) connector is used to connect a laptop or computer. This interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
Overall dimensions: 810x570x210 mm.
Attention! The LTA320AP07 panel of a THOMSON L32D12 LCD TV is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!