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 | 43UH6100 | Image appears and turns off in a direct loop. | Low power supply. When turning off the LEDs, the TV remains on but with the power supply at 160 volts | C612 shorted | LABOTRON |
| LG | 50PA4500 | Burning q404 q403q402q401 due to changed vsc voltage | Cause r266 open check all line resistors | reginaldo. | |
| LG | 21FU6TL CW62E | Vertical closed with lack of synchronization in characters | R311 =30k open | The solution is to replace it | ELETRONICA EM CAEM |
| LG | 42LB9RTA | No sound, just noise from the speakers. | C208 and c221 on the power supply board. Note: all power supply voltages are normal. exhausted capacitors | When replacing the TV it worked perfectly. | Real Eléctron Carvalhos MG |
| LG | 55NANO75SQA | It wouldn't turn on, just the standby light on, power supply ok | Faulty main board | Changing the main board, I put it from another LG55uq801c0sb model, it worked great | Gilberto Costa |
| LG | 47LA6130 | Does not tune digital channels | Integrated circuit ic3701 does not supply voltage to the channel selector at pin 13 of the selector | ELETROFEPAR | |
| LG | RN9 | Sound keeps failing | Mosfet in position q208 close to the sound output and the 12000hz crystal | This shit box doesn't have a complete schematic but I managed to solve it by putting a 2n7002bk-gp | ANDREI ELETROINFO |
| LG | 47LM6700 | LED TV stuttering and won't turn on | On the main board, I disconnected all 24 volt power supply at the main board input connector, the image appeared and sound. I found a shorted capacitor on the 24 volt line. I changed the capacitor and it works perfectly with sound. | Replace capacitor on the 24 volt line very close to the hdmi connectors. | Marcio |
| LG | 22MA33D | Inoperative, no short on board | Capacitors 800 and 804 shorted | Replace the aforementioned capacitors | Gmedeiros |
| LG | 42LG30R | Red LED turns off as if it was going to turn on and it doesn't turn on, power supply voltages are absent | Shorted transistors on the inverter, the fuse did not open, causing the 24v power supply to trip | davi.sls | |
| LG | 26LC7R | HDMI inputs don't work. | Replace capacitor c832 of 100ufx16v on the main board. | Persio (TVCompany) | |
| LG | 32LV300C | It works normally with the series lamp and when connected directly to the 220v, it works for 30 seconds and restarts. | Zener zd9108=16v short (located on the bottom side of the board) | joaocarlos1705 | |
| LG | 50PB650B | Doesn't start | Capacitor c671 shorted and transistor q508 shorted | Replace them and go for the hug... | Lucas Venzke |
| LG | 42LB9RTA LP7BB | TV freezes functions, restarts, image flashes. | Defect in the main PCI, check 3v3 IC1000 regulator. in my case it was high, outputting 4v instead of 3v3. | rafaelmoraes99 | |
| LG | RP14 SC023A | Missing vertical opened at the top and at the bottom | Ra07,309,421 | Replace r307,309,421 | Cícero Santos |
| LG | 42LH20R LP91A | Only the standby LED is on, nothing works, | Defective 3.3v regulator ic1007 is an ap2121n-3.3tre and is next to the sound output on the top of the board | If you don't have the original, just put another 3.3v regulator that works. | resistronic resende |
| LG | 60UH6150 | Backlight does not come on after changing the LEDs | Changing the 2 LED bars | I replaced the LEDs and went to test the TV! As I didn't imagine, this TV doesn't turn on the LEDs if the screen (display) is not connected! the power supply voltage for the LEDs rises to 315v, the normal operating voltage is 180v! So don't be fooled, you replaced the LEDs, being of good quality, just set up the TV and run for the hug! | Rafael Sena |
| LG | 32LV3400 | Turns the STB LED on and off, nothing more | Cold welds on the processor | Reballing, to make sure that this really is it, it is possible to do a brief reflow, if it works, move on to resoldering. | Davi.sls |
| LG | 32LH570B LJ6/LJ7 | Turns on, normal, has audio. but no image, but you can see the weak image in the background, well I immediately suspected the LED bus, but it was blue and needed to be replaced. I ordered the part and put it on and nothing. the bars were good. and this TV is from an external power supply. I went to check the LED controller CI, and I found that tsound was a shorted capacitor, killing the voltage that goes to the bars, and tsound was not enough voltage to light the bars. Capacitor on pin 25 shorted. each case is different. | Changing the capacitor on pin 25 of the LED controller IC. The 32lj600b TV also uses this same circuit. | Replace it. | JC Eletrônica Cícero |
| LG | 29LN549M | Works a little and the sound disappears or no sound | Q700 | Remove the q700 and run for the hug | Gilberto Costa |