Technical description and composition of the THOMSON 46FR3230 TV, panel type and modules used. The composition of the modules.THOMSON
Model: 46FR3230
Panel: T460HW03V1
Inverter (backlight): integrated into PSU
Power Supply (PSU): 81-IPA046-XX0
MainBoard: 46FR3230 092
IC MainBoard: MT8221AMMU, EN25B32, 24C32, HY5DU561622FTP-4
Tuner: TEDE3-601A
Control: RC1994925
Specifications 46FR3230
THOMSON 46FR3230
General recommendations for TV LCD repair
Possible manifestations of malfunctions
- THOMSON 46FR3230 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.
In such cases, you should start looking for a fault in the power supply circuits 81-IPA046-XX0. 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 in the secondary circuits of the converter, it can usually work in an emergency mode in a short-circuit mode, and with a short circuit in the power elements of the primary circuit, the mains fuse or current sensor in the source of the key most often breaks off.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or knowingly working properly.
- There is no picture, there is sound, it reacts to the remote control, the channels are switched. In some cases, the image appears when turned on and disappears immediately.
The defect can be caused by problems in the nodes or elements of the display backlight, or in the power supply of the lamps or the inverter.
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 turn on, the indicator signals the standby or operating mode, or blinks.
Repair or diagnostics of the 46FR3230 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). When repairing MB board, it is necessary to check its components MT8221AMMU, EN25B32, 24C32, HY5DU561622FTP-4. Defective elements must be replaced. If chips with BGA soldering technology are used, the problem in its implementation is detected by local heating of the chip.
If the TV operates normally from external devices, but does not tune to TV channels, the TEDE3-601A tuner may be faulty. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the reason for the inoperability of the tuner may be a software failure.
The THOMSON 46FR3230 signal is often blank when the display backlight is faulty. Moreover, the problem can be both inside the LCD panel (matrix) T460HW03V1, 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, to repair the backlight, disassembly of the T460HW03V1 LCD panel is required - a painstaking process that requires special attention and accuracy from the master. 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 often the main board MainBoard 46FR3230 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 needs to track the passage of LVDS signals from MainBoard 46FR3230, as well as synchronizing signals from T-CON to loops with drivers.
We remind users again! Attempts to repair a THOMSON 46FR3230 TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
The main features of the THOMSON 46FR3230 device:Installed matrix (LCD panel) T460HW03V1.
A converter combined with a power supply is used to power the backlight lamps.
The formation of the necessary supply voltages for all nodes of the THOMSON 46FR3230 TV is carried out by the 81-IPA046-XX0 power module, or its analogs.
MainBoard - the main board (motherboard) is a 46FR3230 module, using MT8221AMMU, EN25B32, 24C32, HY5DU561622FTP-4 and others.
The TEDE3-601A tuner provides reception of television programs and tuning to channels.
LCD TV THOMSON 46FR3230 with LCD T460HW03V1, diagonal size 46 "(117 cm) 16: 9 format. 550 cd / m² screen brightness is provided by CCFL (EEFL) lamps. Contrast - the ratio of maximum brightness to minimum is not less than 3500 : 1. Dynamic contrast ratio of 30,000: 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 Supported multimedia formats: 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, S-Video, component, SCART x2, RGB, 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.
Dimensions: with stand 1129x800x285 mm, without stand 1129x725x95 mm.
TV weight: with stand: 23.6 kg, without stand: 21 kg.
Attention! THOMSON 46FR3230 LCD TV panel T460HW03V1 is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!
