LG TV Repair: Common Faults and Solutions.
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Results: 4833
Results: 4833
LG Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| LG | 32LW300C | TV doesn't turn on without STBY. | Defective main board. | Dc dc converter circuit ic400 short, causes c406 and 405 to leak or short, replace them. | RNSPTEC |
| LG | 32LB550B | TV doesn't turn on only on ST BY. | Defective main board. | Audio circuit, c5641 5640 c5620 5621 10μF smd capacitors with leakage or short, killing voltages on the board. | RNSPTEC |
| LG | 32LN540B | Standby LED does not light | Power supply capacitor shorted | Solution c103 100μFx50v | César |
| LG | 50PN5400 | No image va and vs ok without 18v | C505 in short plus smd capacitor c483 in short 2.2n | Replaces of the same c505 in short plus smd capacitor c483 in short 2.2n | Eduardo Fonseca |
| LG | 50LB5600 | The TV turns off by itself after 22 minutes on average and when you increase the volume the TV goes from few to few digits, it doesn't work..., it was reset, done "instop" and even then the defect manifested itself. recorded eprom and still didn't solve it. | I called LG and opened a technical ticket, I didn't get a response until today, because from the beginning I suspected it was a fault coming from the digital signal sound in my city. But on that day that I called LG, the technician who answered me told me some information that I found interesting, she asked to see the "dtvi interactivity" function in the options menu if it was on or off and it was on. | Continuing, I tested everything possible on the TV with other boards: main board, power supply board, IR board, TCON and the defect continued. Then I discovered that only on the Globo channel the TV had a defect, which confirmed to me a defect in the digital signal coming from the broadcaster, detail, if the interactivity function is turned off, the TV does not show the defect on the Globo... | MIGUELTV |
| LG | 50LB5600 | TV turns off by itself after 22 minutes on average, reset, instop and still the defect manifested itself. recorded eprom and still didn't solve it. | I called LG and opened a technical ticket, I didn't get a response until today, because from the beginning I suspected it was a fault coming from the digital signal sound in my city. But on that day that I called LG, the technician who answered me told me some information that I found interesting, she asked to see the "dtvi interactivity" function in the options menu if it was on or off and it was on. | MIGUELTV | |
| LG | 42LM3400 | The TV arrived, it showed the logo and the black laithe was turned on without anything working. | Electroliquid capacitor c206 10/100, c201 10/100, c202 25/470 | Replace the capacitors and run for the hug | MC BOSCA |
| LG | RP14CB25A | Dark screen and no sound on previously tuned vhf channels | After cleaning with tinner on the welding side, the varicap was normal | Eliel Magno | |
| LG | OM5560 | Protect s | .the power supply does not send power to the amplification. | Replace of the 3 pc817 optocouplers of the power supply. | Alessandro Barcelos |
| LG | RP-21FE85G | Green screen, with retraction lines | Defective tube socket. | Replace tube socket | MARCONES DE ARARIPINA-PE |
| LG | CJ98 | It didn't turn on, 14va varying | Diode d961 shorted, after replacement it started working normally again. | Eletrônica Mirage | |
| LG | 42LE4600 | The standby switch turns from red to white, does not activate the backlight, has no lvds or audio signals. | Main ci with cracks | Reballing resolvedu. | |
| LG | CM 4350 | S-protect | Lack of 12 v | Replace the regulator ic931 kia78r12 | Eletronicazetec |
| LG | 50PT250 | After a while it was on, the pixis sparkled | I removed the 2.2r resistors and shaved six terminals. I resoldered them and it was great | Cabeça | |
| LG | 42LF20FR | It doesn't turn on, and sometimes it turns on and off, the stand by LED doesn't light up | Check main pci reset switch circuit | In my case it was capacitor c812, but it could also be the key, if it shorts out and sends 5v to the other side, thus locking the device | Ademar |
| LG | 42PQ20R | When activating the power, the LED goes from red to blue, the blue LED stays on but the green LED does not sustain it. Tsound is a lack of VA and VS voltage. power supply maintains 5v but hits the relay and disables the rest. | Power supply pcb defect, changed q951(fqpf 9n25c) changed close to the ysus output connector. in this case without defects on ysus, 08/2023. | Hugs | |
| LG | RAD114 | Turns on, tsound is no sound. | Strw-6753 short on power line; changed ic901; q904(20v power supply); zener zd911; zd901; pc901 and d901 | The above components were replaced; device ok, | Valdecir Schena |
| LG | 42LN5400 | Restarting | Cabo | Replace cable that connects the power supply to the main | Brackmann |
| LG | W1752T | Does not turn on the back light | Npn smd transistor q303 with open emitter, 5v comes out to power the ic301 on pin 2 with pson activated. | Eliel Magno | |
| LG | CM8350 FR4-2L 1.6T | Sound cutting out occasionally, disconnecting csd (pin 5 irs) from all irs. | Raise Q710 to locate faulty channel. | Ic701 irs2092 com flashing... | BRITO |