Technical description and composition of the THOMSON T32ED33U TV, panel type and modules used. The composition of the modules.THOMSON LED
Model: T32ED33U
Chassis / Version: MS82S
Panel: LSC320AN01-C06
T-CON: CA320AP18S4LV0.1; SM4108
LED driver (backlight): 40-RL3210-DRB1XG
Power Supply (PSU): 40-P061C2-PWE1XG
PWM Power: FAN6754 (PWM), VIPer17L
MainBoard: 40-MS82S0-MAD2XG
IC MainBoard: MST6E182VS-LF, EN25P32, 24C64, K4T51163QT-BCF7, IT6633E-P, TPA3110D2
Tuner: F35WT-3-E
Specifications T32ED33U
THOMSON T32ED33U
General recommendations for TV LCD LED repair
Possible malfunctions
- THOMSON T32ED33U does not turn on, LEDs on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
In such cases, the 40-P061C2-PWE1XG power supply usually fails. 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 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.
The 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) FAN6754 (PWM), VIPer17L, if they have no visible damage to the case and an outright 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.
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 turn on, does not respond to the remote control. The indicator blinks or signals the standby mode.
Repair or diagnostics of the 40-MS82S0-MAD2XG 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 must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - MST6E182VS-LF, EN25P32, 24C64, K4T51163QT-BCF7, IT6633E-P, 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. Usually such defects are detected by local heating of the chip.
If THOMSON T32ED33U has no image, but there is sound, often the display backlight LSC320AN01-C06 simply does not work. Moreover, in LED TVs, the LEDs inside the panel usually fail, less often the LED driver.
In such cases, you can see a barely noticeable image with a successful hit of external light on the screen.
Replacing the LEDs requires disassembling the LCD panel LSC320AN01-C06 - a process that requires experience and qualifications from the master. We do not recommend doing such work on your own to the owners of TVs and craftsmen who do not have experience in repairing LCD panels
If there is no image, and the backlight is on, the screen becomes slightly lighter when turned on, and in an open TV you can see light through the holes in the panel case.
In this case, the panel may also be faulty - damage to the strips, loops, for example, as a result of moisture ingress after unsuccessful washing of the screen, the T-CON (Timing Controller) board may be faulty. But the main board MainBoard 40-MS82S0-MAD2XG often turns out to be faulty, a software failure is also possible.
Then, first of all, it is necessary to check the panel supply voltage, fuses on the T-CON board, as well as the supply and reference voltages of the column and line drivers - VGH, VGL, Vcom.
If these measurements are within the normal range, it is necessary to trace the passage of LVDS signals from MainBoard 40-MS82S0-MAD2XG with an oscilloscope, as well as synchronizing signals to loops with drivers.
Flooded or unsuccessfully washed screens of LED TVs can be restored, in about half of the cases, usually if significant damage has not formed in the loops and panel strips.
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 F35WT-3-E tuner and update the software. I2C communication pulses must be monitored with an oscilloscope.
Attention to TV owners! Attempts to repair THOMSON T32ED33U on your own are not recommended by the manufacturer and can lead to serious negative consequences!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> THOMSON T32ED33U MS82S, Main: 40-MS82S0-MAD2XG, Panel: LSC320AN01-C06
The appearance of the MainBoard 40-MS82S0-MAD2XG is shown in the figure below:40-MS82S0-MAD2XG
40-MS82S0-MAD2XG can be used in TVs:
ERISSON 23LET70 (Panel LTA230AP01), GOLDSTAR 32A340R (Panel LVW320SSTM E1), GoldStar LT-42A320F (Panel LVF420AUBK), MYSTERY MTV-3225LW (Panel LVM320CSTME13V4), MYSTERY MTV-4019LW (Panel LVF390CMTM E13 V5), MYSTERY MTV-3219LW (Panel LVW320CSTME18 V2), TCL 40D3200 (Panel LTA400HM13 ), TCL 39D3320 39D3320F (Panel LVF390CMTM E13 V2), TCL 39E5000F3D (Panel V390HK1-LS5), THOMSON T39ED33HU (Panel LVF390CMTME15V2), THOMSON T32ED33U (Panel LSC320AN01-C06), THOMSON T32E32U (Panel LVW320SSTT E1).
External view of the power supply
The main features of the THOMSON T32ED33U device:
Installed matrix (LED-panel) LSC320AN01-C06.
Matrix control uses Timing Controller (T-CON) CA320AP18S4LV0.1 ;.
LED driver 40-RL3210-DRB1XG is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the THOMSON T32ED33U TV is carried out by the 40-P061C2-PWE1XG power module, or its analogs using FAN6754 (PWM), VIPer17L microcircuits.
MainBoard - the main board (motherboard) is a 40-MS82S0-MAD2XG module using MST6E182VS-LF, EN25P32, 24C64, K4T51163QT-BCF7, IT6633E-P, TPA3110D2 and others.
The F35WT-3-E tuner provides reception of television programs and tuning to channels.
LED TV THOMSON T32ED33U with LCD display LSC320AN01-C06, diagonal size 32 "(81 cm) 16: 9 format. The declared brightness of the screen 400 cd / m2 is provided by modern LED backlight LED. less than 1000: 1. The design of the LCD panel uses a backlight with an edge arrangement of LEDs - Edge LED. It is possible to view in high quality HD at a resolution of 1366x768 pixels in the 720p standard (HD Ready). Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC Digital signal formation (graphic format) is performed in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p Multimedia formats are supported: MP3, WMA, MPEG4, Xvid, JPEG.
Speaker power 16 W (2x8 W) is provided by two speakers. Uses NICAM stereo processing system and Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, VGA, HDMI x3, 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, 1280x1024, 1360x768.
The power consumed by the TV from the network in the operating mode is not more than 50 W.
Dimensions: with stand 764x538x183 mm, without stand 764x487x57 mm.
Attention! The panel LSC320AN01-C06 of the THOMSON T32ED33U LED TV is an expensive and unreliable element.
Do not allow any impact 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.