Technical description and composition of the THOMSON T32E32U TV, panel type and modules used. The composition of the modules.THOMSON LED
Model: T32E32U
Chassis / Version: MS82G
Panel: LVW320SSTT E1
LED backlight: 67-725790-0A0
T-CON: RD_HD32_AP05S4LV0.1
LED driver (backlight): 40-RT3210-DRF2XG
PWM LED driver: MAP3204
MOSFET LED driver: TK8P25DA
Power Supply (PSU): 40-P081C0-PWD1XG
PWM Power: VIPER17L, FAN6754
MainBoard: 40-MS82S0-MAD2XG
IC MainBoard: MST6E182VS-LF, 25Q32A-100HIP, 24C64, K4T51163QT-BCF7, IT6633E-P, TPA3110D2
Tuner: F35WT-3-E
Specifications T32E32U
THOMSON T32E32U
General recommendations for TV LCD LED repair
Possible malfunctions
- THOMSON T32E32U 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.
Usually, with similar manifestations, the defect is caused by faulty elements in the main power module 40-P081C0-PWD1XG. It is necessary to measure the output voltages in its secondary circuits, and if they are completely absent, 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.
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 the PWM regulator, in frequency setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) are usually checked by replacing them with new ones, or knowingly working.
- There is no picture, but there is sound and reaction to the remote control. Or, for a second, the image may appear immediately after switching on.
As a rule, in such cases there is no display backlight. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
If THOMSON T32E32U has no image, but there is sound, often the LVW320SSTT E1 display backlight 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 LVW320SSTT LCD panel - 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.
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 is required, and ideally a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters tend to light one 3-volt 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 broken through in the K / Z.
- 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). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - MST6E182VS-LF, 25Q32A-100HIP, 24C64, K4T51163QT-BCF7, IT6633E-P, TPA3110D2 with new or known good ones. In cases where BGA technologies are used, defects are usually localized by heating.
Before changing the F35WT-3-E 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
Users and owners of TVs need to remember that attempts to self-repair a THOMSON T32E32U TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> THOMSON T32E32U MS82G, Main: 40-MS82S0-MAD2XG, Panel: LVW320SSTT E1
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 T32E32U device:
Installed matrix (LED panel) LVW320SSTT E1.
Matrix management uses the Timing Controller (T-CON) RD_HD32_AP05S4LV0.1.
The LED driver 40-RT3210-DRF2XG is used to power the backlight LEDs, it is controlled by the PWM controller MAP3204. TK8P25DA keys are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the THOMSON T32E32U TV is carried out by the 40-P081C0-PWD1XG power module, or its analogs using VIPER17L, FAN6754 microcircuits.
MainBoard - the main board (motherboard) is a 40-MS82S0-MAD2XG module, using microcircuits MST6E182VS-LF, 25Q32A-100HIP, 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 T32E32U with LCD LVW320SSTT, diagonal size 32 "(81 cm) 16: 9 format. The declared brightness of the screen 230 cd / m2 is provided by modern LED backlight LED. The ratio of maximum brightness to minimum (contrast) is not less than 4000 : 1. This TV's LCD panel technology uses LED backlighting. You can view in high quality HD at a resolution of 1366x768 pixels in 720p standard (HD Ready). Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. signal (graphic format) is produced in the 480i, 480p, 576i, 576p, 720p, 1080i standards, and the multimedia formats are supported: MP3, WMA, JPEG.
Speaker power 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 x2, 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 110 W.
Dimensions: with stand 764x538x183 mm, without stand 764x487x57 mm.
TV weight: 9.7 kg.
Attention! The LVW320SSTT E1 panel of the THOMSON T32E32U 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.