LG TV Repair: Common Faults and Solutions.
Search: LG
Results: 4834
Results: 4834
LG Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| LG | 32LD350 | Turning off after a few minutes | A lamp without turning on | Changing the lamp | ON-PLAY ELETRONICA |
| LG | 42LB6200 LJ43B | LED bar doesn't light up | Shorted LED or LEDs | Replace leds | Felipe Tales |
| LG | 42SL90QD | I'm sound. | TV without sound, but with normal image. the digital audio output was off. all normal voltages. | I heated the base of the plate to 100ºC and reflowed it with a blower at 310ºC for 10 seconds. problem solved! | Rui |
| LG | CM4320 | Input fuse blowing | Q902 e fusivel | Replace | eletronica sto ant rj bahia |
| LG | 21FJ6RB | Weak image without brightness | Diodo d502 do abl | Replace for a 1n4148 | Marcleo |
| LG | 42LD460 | When it turns on, the screen blinks and turns off, and the standby light blinks. | The first test to do is to force the power supply to turn on. make a jumper between the p-dim, a-dim, inv on/off, power on pins with a 100Ω resistor at 3.5v. If the back light lights up normally, the defect is in the main. | Replace the 100μF input capacitors. c401, c402 | Henrique |
| LG | 20CC25 MC059 | Power supply pulsing and low with whistle pit pit pit if you turn off the fr403 the tension normalizes | Flayback replace | eletronica sto ant rj bahia | |
| LG | 42LK450 | Does not turn on an off LED, power supply completely without even a voltage at the output. | R509 smd203 | Altered or open 20k smd resistor r509 is next to the zd501 and connects to pin 6 of the ic501 str w6053n. | Daniel Freitas |
| LG | CM 4340 | Won't turn on without 5v voltage | Zd901 27v | Replace it for another one even though the multimeter works fine. | Henrique |
| LG | 49LB5500 | The TV would work for a few minutes and turn off. The standby LED would blink quickly | 100k smd resistor position r125 changed. close to two smd mosfets of the power supply that is underneath the power supply board | ||
| LG | 21SA1RL CW81B | E/w | Check q405(k2941), r455(10k), l401 l401, zd403, d402 and d404 | Replace burned components after check | Prem Shankar Singh |
| LG | 21FJ8RL | Tv arms and disarms | Q16 e r301 | Replace it with another and run to another | Antonio Carlos (Eletrônica Renascer) |
| LG | 32LD650 | When pressing the power button, the LED starts flashing. tensions ok. | Bga | The reflow was done and it started working normally again. but it is recommended to do the reballing so that the problem does not return. | croclaro |
| LG | 20CB20A SC23A | Sometimes it would call, sometimes it wouldn't and when it did, it would appear with a horizontally reduced picture | Low voltage in the secondary of + b cap 814 of 47 by 160v exhausted | Replace and run to the hug God is faithful | eletronica sto ant rj bahia |
| LG | RP-20CC25 | Does not light up stand by | After testing the secondary power supply, I discovered that tsound was a leak caused by the capacitor (c813) 102/2kv, killing the secondary voltage. | Capacitor removal or replacement (c813) | Carlos Alberto (Eletrônica Baturité) |
| LG | 32LG30R | Turning on and off with noise | Capacitors on pci | Replace the capacitors on the main board: 875,879 of 10mf/16v and the cap: 1128 of 100mf/16v | flavio |
| LG | FLATRON L1740PQ | Red standby LED kept flashing, but monitor did not turn on. | Problem in power supply aip-0108. voltage below nominal and oscillating. problem capacitors. | Even though tsound was no visual mark, the capacitors were bad. Replace the electrolytic capacitors on the power supply board (c202 c203 c204 c205 c206 c207). As a precaution, I replaced capacitors c105 and c103. | Jonatas Dias |
| LG | CM4440 | Does not turn on display...rarely works (cold) 3 seconds (turns off) | Ic501 ...with a magnifying glass or microscope, look over the ic and look for cracks or holes | Replace board, ic501 in operation, it already works hot (I added a decipher) | Alextecnico |
| LG | 14SB1RB | Vertical open just 3 cm in the middle of the screen | D302, 1n4005 open . | I put1n4007 it was great! | Deda Eletrônica |
| LG | 47LA6204 | Plug it into the socket and then the fuse is short, completely blown | After checking the rectifier bridge, voltage doubler and diodes, I discovered the cause was the transistors Q101 and Q102 in total short, I just had to change and run to dim dim, health, peace, good luck | ELETRONICA PUBLISOM DE NATAL RGN |