Technical description and composition of the THOMSON 40FR3230 TV, panel type and modules used. The composition of the modules.THOMSON
Model: 40FR3230
Chassis / Version: T8222P
Panel: LTA400HA07
T-CON: SYNC60C4LV0.3
Inverter (backlight): SSI_400_14A01 REV0.1
Power Supply (PSU): 40-6PL37C-PWE1XG 08-PW37C02-PWYB
PWM Power: L6599D, VIPER22A, L6563
MOSFET Power: 12N50T
MainBoard: 40-T8222P-MAE2XG 08-MT21003-MA3000AA 4A-LCD40T-SS8 ULB909885F
IC MainBoard: MT8221AMMU, EN25B32
Tuner: TEDE8-601A
Control: Remote: RC1994925, IR: 40-EUM19B-IRC1XG
Specifications 40FR3230
THOMSON 40FR3230
General recommendations for TV LCD repair
Possible manifestations of defects
- THOMSON 40FR3230 TV does not turn on. There are no signs of operability. The indicators on the front panel do not light or blink, the TV does not respond to the remote control and control buttons.
In some of these cases, the main switching power supply, the 40-6PL37C-PWE1XG module, is faulty. It is necessary to make sure that its output voltages are present and, if they are completely absent, check the power switches (12N50T) 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) L6599D, VIPER22A, L6563, 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 picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and immediately disappears
These manifestations can be provoked by the power module, or by defects in the inverter, as well as by the skew of currents in the lamps due to their uneven wear. After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, ring the power switches in its converter for breakdown and the secondary windings of the transformers for an open circuit.
If, when diagnosing a malfunction, it is required to turn off the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are completed, it is imperative to restore the protection circuits for the further safe operation of the TV by the owner in normal mode.
- The TV does not go into operation, does not respond to the remote control. The indicator on the front panel is on or blinking.
Repair or diagnostics of the 40-T8222P-MAE2XG 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 - MT8221AMMU, EN25B32 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).
Before replacing the TEDE8-601A tuner, if there is no tuning to the channels, you must first check the software and the supply voltage at its outputs. You also need to make sure that the tuner and processor can exchange data via the I2C bus !
The THOMSON 40FR3230 has no display when there is a signal, and is often caused by a malfunctioning display backlight. Moreover, the problem can be both inside the LCD panel (matrix) LTA400HA07, for example, a malfunction of CCFL (EEFL) lamps, and outside in their power source - an 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 LTA400HA07 LCD panel - a painstaking process that requires special attention and accuracy from the craftsman. 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 40-T8222P-MAE2XG 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 normal limits, then the oscilloscope should track the passage of LVDS signals from MainBoard 40-T8222P-MAE2XG, as well as synchronizing signals from T-CON to loops with drivers.
Owners of the 40FR3230 TV are advised to contact only qualified specialists with the necessary experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> THOMSON 40FR3230, Main: 40-T8222P-MAE2XG 08-MT21003-MA3000AA 4A-LCD40T-SS8 ULB909885F, Panel: LTA400HA07
The appearance of the MainBoard 40-T8222P-MAE2XG is shown in the figure below:40-T8222P-MAE2XG
External view of the power supply
The main features of the THOMSON 40FR3230 device:
Installed matrix (LCD panel) LTA400HA07.
Matrix control uses the SYNC60C4LV0.3 Timing Controller (T-CON).
The inverter SSI_400_14A01 is used to power the backlight lamps.
The formation of the necessary supply voltages for all nodes of the THOMSON 40FR3230 TV is carried out by the 40-6PL37C-PWE1XG power module, or its analogs using L6599D, VIPER22A, L6563 microcircuits and 12N50T power switches.
MainBoard - the main board (motherboard) is a 40-T8222P-MAE2XG module, using MT8221AMMU, EN25B32 and others.
The TEDE8-601A tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA400HA07
Type: a-Si TFT-LCD, Panel
Diagonal size: 40 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 885.6x498.15 mm
Surface: Antiglare (Haze 7%)
Brightness: 430 cd / m²
Contrast Ratio: 4000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: 14 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
LCD TV THOMSON 40FR3230 with LCD LTA400HA07, diagonal size 40 "(102 cm) 16: 9 format. 450 cd / m² screen brightness is provided by CCFL (EEFL) lamps. Contrast - the ratio of maximum brightness to minimum is at least 3000 : 1. Dynamic contrast ratio of 20,000: 1 is achieved by a special control of the backlight depending on the brightness of the scene.The design and technical capabilities of the TV provide viewing in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD) .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, 1080p standards.
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, S-Video, component, SCART, VGA, HDMI x2, USB. A standard VGA (D-Sub 15) connector is used to connect a laptop or computer. This interface supports resolutions: 640x480, 800x600, 1024x768.
Dimensions: with stand 970x699x285 mm, without stand 970x630x91 mm.
TV weight: with stand: 19 kg, without stand: 16.4 kg.
Attention! The LTA400HA07 panel of a THOMSON 40FR3230 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!
