TCL LCD TV L32M16 three no lights are not bright fault repair - Home Appliances

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The first TCL-L32M16 plugged in three no lights, no disassembly, disassemble check, the sub power supply does not have 3.3V output, the visual power board is intact, the test fuse is intact, the sub power chip FSQ510 is not bursting, the test chip 7 feet are not Voltage, and then measure the voltage of 300V at both ends of C806, carefully check R825, R801 is damaged, the resistance is 2.7 ohms. Directly replace with a 5.1 ohm resistor, at the same time replace the C806 and FSQ510, the boot indicator lights, press the standby button, the TV is turned on normally, troubleshooting, charging red and black. (The drawings are found online. The component numbers may be inconsistent with the label on the board. It is just a component number on the drawing that is convenient for everyone to view and write.)










The second example Konka LC32DT68C plug-in indicator light, press the standby button indicator light off, but can not be turned on twice, disassemble to check 5VSB normal, PSON 5V is normal, check the voltage of the large capacitor CF901 voltage 300V, the original PFC circuit did not work, Checked the 34005534 power board is very cheap, the original second-hand board purple black, too lazy to repair the board, the price of orange black brown, change board repair, the user agrees, buy back the original board, the machine is normal. (Advise friends not to be too rigid, to repair if they are repaired, to change the board early, to charge, to save time.)