Technical description and composition of the THOMSON T50E80DHU TV, panel type and modules used. The composition of the modules.THOMSON LED
Model: T50E80DHU
Chassis / Version: HK-T.SP9202V54
Panel: V500HJ1-LE1 REV.C1
T-CON: V500HJ1-CE6; CM2805A, CM501
LED driver (backlight): L500H1-ZEA-C112C
PWM LED driver: 7203HA, 5208PB
MOSFET LED driver: M8014D
Power Supply (PSU): PE421C5 40-E421C6-PWC1XG
PWM Power: FSL206MR, FAN7930C, FSFR1700XS
MOSFET Power: K12A50D
MainBoard: HK-T.SP9202V54
IC MainBoard: CPU: SPV9202BD, Spi Flash: 25Q32BSIG
Tuner: NoName
Specifications T50E80DHU
THOMSON T50E80DHU
General recommendations for TV LCD LED repair
Possible manifestations of defects
- THOMSON T50E80DHU 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.
Often in such cases, the 40E421C6-PWC1XG power module is faulty. It is then necessary to measure its output voltages and, in their absence, the power switches and rectifier diodes of the converters should be checked for the probability of a short circuit.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually operate normally in an emergency short-circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and, less often, the current sensor in the source of the key.
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 FSL206MR, FAN7930C, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or known to be working properly.
- There is no picture, but there is sound and reaction to commands from the remote control. Or the image appears immediately after switching on and disappears.
The most likely problem in these cases is a malfunction of the LED backlight. The reason may be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
To check the health of the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can check each LED separately with a simple Chinese multimeter (powered by 9 volts) in the P-N transition test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black one to its cathode, then the 3-volt LED will light up slightly, and in the opposite direction you can detect the transition of the emergency zener diode. The serviceability of the PN junction of the Zener diode indirectly indicates the serviceability of the LED-a
- The TV does not turn on, the indicator signals the standby or operating mode, or blinks.
Repair or diagnostics of the HK-T.SP9202V54 motherboard should begin with checking the stabilizers and power converters necessary 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 - CPU: SPV9202BD, Spi Flash: 25Q32BSIG which may require replacement with new ones. If a BGA processor is installed, there is a possibility that the soldering of the contacts of its pins with the board is broken (detected by warming up).
If THOMSON T50E80DHU has no picture, but there is sound, often the display backlight V500HJ1-LE1 REV.C1 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 V500HJ1-LE1 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 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 HK-T.SP9202V54 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 the MainBoard HK-T.SP9202V54 with an oscilloscope, as well as synchronizing signals to the 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.
If there is no reception of TV channels, but the TV is working properly from external devices, first of all, you need to check the supply voltage of the NoName tuner and update the software. I2C communication pulses must be monitored with an oscilloscope.
Attention to TV owners! Attempts to repair THOMSON T50E80DHU yourself are not recommended by the manufacturer and can lead to serious negative consequences!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> THOMSON T50E80DHU, Main: HK-T.SP9202V54, Panel: V500HJ1-LE1 REV.C1
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> THOMSON T50E80DHU Chassis HK-T.SP9202V54
The appearance of the MainBoard HK-T.SP9202V54 is shown in the figure below:
HK-T.SP9202V54
HK-T.SP9202V54 can be used in TVs:
THOMSON T40E04DHU-01B (Panel LVF400SSDX E7 V3), THOMSON T50E80DHU (Panel V500HJ1-LE1 REV.C1), THOMSON T32E04DU T32E04DU-01B (Panel A320HE2A04-11).
External view of the power supply
The main features of the THOMSON T50E80DHU device:
Installed matrix (LED panel) V500HJ1-LE1 REV.C1.
Matrix control uses Timing Controller (T-CON) V500HJ1-CE6 ;.
The LED driver L500H1-ZEA-C112C is used to power the backlight LEDs, it is controlled by the PWM controller 7203HA, 5208PB. The keys of the M8014D type are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the THOMSON T50E80DHU TV is carried out by the PE421C5 power module, or its analogs using FSL206MR, FAN7930C, FSFR1700XS microcircuits and power switches of the K12A50D type.
MainBoard - the main board (motherboard) is a HK-T.SP9202V54 module, using CPU chips: SPV9202BD, Spi Flash: 25Q32BSIG and others.
Tuner NoName provides reception of television programs and tuning to channels.
LED TV THOMSON T50E80DHU with LCD V500HJ1-LE1, diagonal size 50 "(127 cm) 16: 9 format. The declared brightness of the screen of 320 cd / m2 is provided by modern LED backlight LED. The ratio of maximum brightness to minimum (contrast) is not less than 5000: 1. The LCD panel uses Edge LED backlighting The design and technical capabilities of the TV allow viewing in high quality HD at a resolution of 1920x1080 pixels in graphics resolution in 1080p (Full HD). Input high-frequency or video signal 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: MP3, WMA, MPEG4, MKV, 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, audio x2, component, SCART, VGA, HDMI x3, USB. 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 digital tuner has the ability to receive television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
The power consumed by the TV from the network in operating mode is not more than 95 watts.
Dimensions: with stand 1136x730x240 mm, without stand 1136x972x57 mm.
TV weight: with stand: 24.4 kg, without stand: 19.5 kg.
Attention! The V500HJ1-LE1 REV.C1 panel of the THOMSON T50E80DHU 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.