Technical description and composition of the THOMSON T23E32U TV, panel type and modules used. The composition of the modules.THOMSON LED
Model: T23E32U
Chassis / Version: MS82S
Panel: LTA230AP01
T-CON: A230KPS4LV 0.1; LAXC021T1B-Q1, CM4108
LED driver (backlight): 40-RS2310-DRA2XG
Power Supply (PSU): 40-P061C1-PWE1XG P061C1
PWM Power: FAN6754
MainBoard: 40-MS82S0-MAD2XG
IC MainBoard: CPU: MST6E182VS-LF SPI Flash: 25Q32 EEPROM: 24C64
Tuner: F35WT-3-E
Specifications T23E32U
THOMSON T23E32U
General recommendations for TV LCD LED repair
Possible malfunctions
- The THOMSON T23E32U TV does not turn on, does not respond to the remote control and control panel buttons, the indicators do not light up or flash.
In such cases, the P061C1 power supply is usually defective. Its output voltages should be measured and, in their absence, the power switches and rectifier diodes should be checked for the probability of a short circuit in the converters.
In case of breakdowns of semiconductors in the secondary circuits, the converter can usually work in an emergency in the short-circuit mode, and with a short circuit in the power elements of the primary circuit, the mains fuse often breaks.
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, if they do not have visible damage to the case and an outright short circuit between the terminals, 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.
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.
It should be remembered that it is not possible to determine an open circuit in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then you need to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow opening the LED in the forward direction or dual LEds are used, then the PN transition of the emergency zener diode can indirectly serve as an indicator of serviceability. In the event of a malfunction of the LED-a, the PN-junction of the zener diode will either be cut off or broken into the K / Z.
- The indicator blinks or is on constantly, the TV does not turn on, does not respond to the remote control.
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). If it is not possible to replace the MB (SSB) board, you need to check the serviceability of its elements - CPU: MST6E182VS-LF SPI Flash: 25Q32 EEPROM: 24C64. Defective components must be replaced.
Before replacing the F35WT-3-E tuner, if there is no tuning to the channels, you must first check the software and the supply voltage at its terminals. You also need to make sure that the tuner and processor can exchange data via the I2C bus.
If THOMSON T23E32U has no picture, but there is sound, often the LTA230AP01 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 LTA230AP01 LCD panel, a process that requires experience and qualifications from the technician. 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 the light through the holes in the panel case.
In this case, the panel may also be faulty - damage to 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, the 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.
Once again, we remind TV users: do not try to repair yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair to professionals with sufficient experience in the field of electronic repair.
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> THOMSON T23E32U MS82S, Main: 40-MS82S0-MAD2XG, Panel: LTA230AP01
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> P061C1 40-P061C1-PWE1XG Power supply
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 T23E32U device:
The matrix (LED-panel) LTA230AP01 is installed.
Matrix control uses the Timing Controller (T-CON) A230KPS4LV.
The LED driver 40-RS2310-DRA2XG is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the THOMSON T23E32U TV is carried out by the 40-P061C1-PWE1XG power module, or its analogs using FAN6754 microcircuits.
MainBoard - the main board (motherboard) is a 40-MS82S0-MAD2XG module, using CPU chips: MST6E182VS-LF SPI Flash: 25Q32 EEPROM: 24C64 and others.
The F35WT-3-E tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA230AP01
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.0 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 508.152x285.696 mm
Surface: Antiglare
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 68%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: 11S3P WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
LED TV THOMSON T23E32U with LCD LTA230AP01, 23 "(58 cm) 16: 9. : 1. The LCD panel uses Edge LED backlighting. You can view in high quality HD at a resolution of 1366x768 pixels in 720p standard (HD Ready). The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. The digital signal (graphic format) is generated in the 480i, 480p, 576i, 576p, 720p, 1080i standards, and the multimedia formats are supported: MP3, JPEG.
Speaker power of 6 W (2x3 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, audio x2, component, 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.
Dimensions: with stand 567x411x155 mm, without stand 567x369x49 mm.
TV weight: 4.2 kg.
Attention! The LTA230AP01 panel of the THOMSON T23E32U 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.
