Technical description and composition of the THOMSON 19HR3010 TV, panel type and modules used. The composition of the modules.THOMSON
Model: 19HR3010
Panel: CLAA185WA03
T-CON: 185WA01S HX8811-L
Inverter (backlight): with integrated PSU
Power Supply (PSU): 40-IPL19C-PWG1XG ULB909498B 08-IPL1922-PW1
MainBoard: 4A-LCD19T-CH1 T8-TM19NMS-MA4 UBL909498B V8-0MT0008-LF1V101 U8
IC MainBoard: MT8200ALE, MT8293AE, S29AL016D70, W9864G61H, F9222, TDA9886TS, 24C32, 24C08, HEF4052, ATMLH930, TDA7266
Tuner: TEDE8-601A 07-389FI5-NB8G
Specifications 19HR3010
THOMSON 19HR3010
General recommendations for TV LCD repair
Possible manifestations of defects
- THOMSON 19HR3010 TV does not turn on at all. No response to the remote control and front panel control buttons. Indicator lamps do not light up or flash.
In some of these cases, the main switching power supply, the 40-IPL19C-PWG1XG module, is faulty. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches and rectifier diodes in the converters for a short circuit.
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.
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, but there is sound, it reacts to the remote control. Or the image appears when turned on and immediately disappears
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.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protective circuits must be restored immediately after the repair is completed.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.
Repair or diagnostics of the 4A-LCD19T-CH1 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 - MT8200ALE, MT8293AE, S29AL016D70, W9864G61H, F9222, TDA9886TS, 24C32, 24C08, HEF4052, ATMLH930, TDA7266 and replace the failed chips with new ones. Some malfunctions can be associated with the use of BGA soldering technologies in modern Main Board. Usually such defects are detected by local heating of the chip.
The malfunction of the TEDE8-601A 07-389FI5-NB8G tuner is established after checking the software and all supply voltages at its outputs. The data exchange of the tuner with the processor via the I2C bus can be monitored with an oscilloscope.
The THOMSON 19HR3010 has no display when a signal is present, often caused by a malfunctioning display backlight. Moreover, the problem can be both inside the LCD panel (matrix) CLAA185WA03, for example, a malfunction of CCFL (EEFL) lamps, and outside in their power source - the 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, it is required to disassemble the CLAA185WA03 LCD panel - a painstaking process that requires increased 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 the main board MainBoard 4A-LCD19T-CH1 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 the above measurements are within the normal range, then the oscilloscope should track the passage of LVDS signals from MainBoard 4A-LCD19T-CH1, as well as synchronizing signals from T-CON to loops with drivers.
Remember! Attempts to self-repair the THOMSON 19HR3010 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
The appearance of the MainBoard 4A-LCD19T-CH1 is shown in the figure below:4A-LCD19T-CH1
External view of the power supply
The main features of the THOMSON 19HR3010 device:
Installed matrix (LCD panel) CLAA185WA03.
Matrix control uses Timing Controller (T-CON) 185WA01S.
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 19HR3010 TV is carried out by the 40-IPL19C-PWG1XG power module, or its analogs.
MainBoard - the main board (motherboard) is a 4A-LCD19T-CH1 module, using the MT8200ALE, MT8293AE, S29AL016D70, W9864G61H, F9222, TDA9886TS, 24C32, 24C08, HEF4052, ATMLH930, TDA7266 and others.
Tuner TEDE8-601A 07-389FI5-NB8G provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CPT
Model: CLAA185WA03
Type: a-Si TFT-LCD, Panel
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 5 (Tr + Td)
Frequency: 60Hz
Lamp Type: 2 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
LCD TV THOMSON 19HR3010 with LCD CLAA185WA03, diagonal 19 "(48 cm) in 16: 9 format. Screen brightness 350 cd / m2 is provided by CCFL (EEFL) lamps. Contrast - the ratio of maximum brightness to minimum is not less than 1000 : 1. Can be viewed 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 480i, 480p, 576i standards , 576p, 720p, 1080i.
The power of the sound system is 6 W (2x3 W), 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, component, SCART, RGB, VGA, HDMI. 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 477x357x125 mm, without stand 477x331x62 mm.
TV weight: with stand: 3.8 kg, without stand: 3.5 kg.
Attention! The CLAA185WA03 panel of a THOMSON 19HR3010 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!
