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Tcl Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SEMP/TCL55K1US
Dark screen only soundLed barsChanging LED bar kit LED voltage was 118v. when the right one would be 108v each led is 3v I removed r772, r773, r789 the voltage dropped to 106vValerio
SEMP/TCL55K1US
Dark screen only soundLed barsChanging LED bar kit LED voltage was 118vValerio
SEMP TCL L49S4900FS
L49S4900FS
Television does not turn on completely inoperative does not light stand by led fuse burnt out due to shorted regulator2 regulator 50wn1k0 shorted replace with tk7p60wIf the TV had a blown fuse, check these regulators on the board, position QW3 and QW4. After the replace, the TV started working normally again.Eletronica15
TCLL48S4700FS
Turns on and alternates colors (white, green, blue, red, etc.)Clean all ribbon cablesAmarildo Callai
TCLL55S4900FS
Power supply burned out and the new one only works on 220vI bought a new one on Aliexpress but it only works on 220vI solved the problem by changing the r431 resistor to a 56kΩ one (resistor code 563)R10 Informática E Eletrônica
TCLL55S4900FS
LEDs burned outChange the complete LED kit and change the power supply by removing 2x 15Ω resistors reference R623 and R625 to lower the voltage and not burn any more LEDsR10 Informática E Eletrônica
TCL65P65US
Does not turn on, customer complained that he heard a pop. After opening, several broken and burned components were found on the power supply board.Cause: c414(220pf 1kv) or c302(220pf 1kv). It is recommended to apply 2kv.Sequence of components that fail: c414(220pf), c302(220pf), u401(ld5537 or 8537t or 8535), r403(330r), r402(330r), r419(68r), r420(2r7), r421(22r), d401=mc2838 (50v 300ma).EC
TCL49U7800
Changing the backlight and reducing the power supplyContinuing the previous tip; to reduce the backlight power supply directly on the power supply board, replace the smd resistor r619 (47k) with a 10k resistor. After that you will see a reduction of around 5v in each of the two backlight power outputs.EC
TCL49U7800
Backlight defect; method of reducing power directly on the power supply board;After changing the backlight, reduce the backlight power supply.EC
TCLL40S4900FS
LED burningPower supply changed with extra voltageRemove resistor r341 12k and r314 24k (underneath pin 2 to ground) insert 1 of 15kJUNIOR PORTALTEC ELETRONICA CATALAO
TCLL32B3303
When turned on, "initializing" appears and doesn't go through, nothing else turns onDefective 25q64 memoryRead 25q64 and write to another memoryEdson SP
TCLL40S4900FS
RestartingUpdate softwareIt was disconnecting when using YouTube and Netflix. follow steps to update the system using the tcl guideAxcell assistência
TCL L32S4900S
Led current deductionModify resistor that is between gnd and pin 6 of the ub801, thus reducing it from 81.1v to 76.6vRemove the 270k resistor and install a 360k one,Paial.eletros
TCL32S6500S
Reduce LED currentRemove the rr08 from the circuitnaelson silva gravata pe
TCL50P6US
TCL appears and goes off, leaving vertical yellow or orange stripes on the screen, it seems like it is a faulty display.Shorted vcon protection diodesI followed the tips from previous friends and it worked. (thank you!! (check the 100r resistors (r075 and r086) of the vcon on both sides, if they are replaced it means that the protection diodes (d001 and d002 - left side) and (d003 and d004 - right side) are shorted , remove diodes and leave without and replace resistors)CDS_DIAS / LED TECH
TCL55EP660
Very bright screenReplace eepromERP-ASSIST
TCLL32S4900
No image, sound okCeramic capacitor shorted on the screen boardMatias ERP
CONVERSOR SEMP TCLDC-2008-H
The LED turned on, but tsound was no imageI removed the vga heatsink and heated it with a hairdryer for about 5 minutesAnd it worked normally again, these factory solders have little alloy, so over time they lose their alloy, mad just heat it up again and it's gone.Kohlmann
SEMP TCLDC-2008-H
The LED turned on but tsound was no imageIt was the VGA with cold soldering, I removed the heatsink and gave it heatWith the hairdryer for about 5 minutes and it worked normally againKohlmann
TCL32S6500S
Totally inoperativeCapacitor smd cdd1 de 10uReplace the same and run for the hugEletronica kerkhoven