Lg Repair Tips
Search: lg
Results: 4959
Results: 4959
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| LG |
29LH300B
|
TV turns on, appears immediately and then turns off. When the TV is open, tsound is a noise from the LED power oscillator. | This TV uses an LED bar on the side of the screen, a total of 32 LEDs wsound the circuit powers them, divided in half, 16 for each side. | I did several tests on the board and didn't find a defect, and I could tell that it was being forced, I tested by adding another LED to each circuit, so it turned off even faster and the noise increased. So I removed an original LED on each side, leaving 30 LEDs in total, and the circuit started working normally again without the excess noise. | Margutek.BVA |
| LG |
32LF20FR
|
Receives normal on and off function, power supply voltages ok by connecting directly (I use a 1k resistor on the pwon at 5v, 12v appears then just touch 5v on the pwrdim and 24 appears), another way is to put a strong flashlight on the screen and keep pressing the menu, if you see it could be the same problem. | I replaced 2 mosfets (tsound are 4) of the inverter, in my case short, fdd8447l | Macro Eletrônica | |
| LG |
21FU4RL
|
Very weak signal | Z102 | X102 | Edval |
| LG |
32LB9RT
|
Does not turn on, stand by LED is off | TV doesn't turn on or standby, 3.5 v power supply is only 1.5v...disconnect from the main cable, power supply went up to 3.5v, I went to the main to look for a short, I found some 4.7 caps with high ESR, I changed them and nothing, I injected 3.5 v x 500ma and I didn't notice high consumption, the main LEDs lit up, I concluded that the main one wasn't defective, I went back to the power supply and found c510 and c506 (47u x 25v) with high ESR and completely dry, they measured zero with an analog multimeter, I just had to change it (mine conclusion and that the power supply did not supply the main consumption) | Replace | Maurilio |
| LG |
47LA6130
|
TV turns off by itself sometimes, sometimes turns off and on but doesn't go out | Change power supply capacitors on the 3.5v line (stand by power supply), | Replace capacitors (without measuring) c201 c202 470μF/25v and 1500μF/10v | Tulio UBA |
| LG |
42LC4R
|
No signal on hdmi inputs | Capacitors with high esr. | Replace cap. from the comp list: minimum voltage of capacitors 16~25v -- c547-4.7μF c516-10 c117-10 c120-10 c813-100 c824-47 c832-100 c318-10 c316-10 c311-10 | evando viana |
| LG |
21FJ8RL
CW81B |
Normal connection with the vertical closed! | C311 | Replace the 2200μF25v c311 without measuring and the TV will work normally. God be praised! | Sinailson furtado |
| LG |
32/42LD460
|
Stuck on lg logo or turning off by itself | Ar 1201 and ar1202 open, banks of resistors, located close to the processor. | Measure them all and replace them for the same value | Alex Lopes <small> |
| LG |
14SB1RB
|
Secondary power supply below 90v | Photo-coupler | fabiusmax | |
| LG |
CJ87
|
Does not turn on or turns on from time to time | X500 and x501 crystals. After heating it turns on... | Replacing it... removing x501 from old cell phone cards, tsound are lots of them. x501 removed from tablet board, exactly 24mhz, they are a little bigger, but they fit perfectly... | cricascell |
| LG |
29FS4RL1
|
When turned off, the LED doesn't even light up and the fuse is burning. This TV was burned by lightning. | Shorted rectifier bridge | Mat cap25 ves40 every time you did good to your brother, you did it to me. said the king. | <span class="xxsmall">ELETRONICA NOSSA SENHORA APARECIDA</span> |
| LG |
50PK550
|
League, no image | Reballing | Replace the processor balls - autogen before | Eletronica Jambeiro |
| LG |
47LM6400
|
When turning on the TV tsound is sound but the image takes a long time to appear. | When connecting the TV, the output of Q2407 (Mosfet for Chanel) does not show 12V (panel power supply). the gate voltage determined by the resistive mesh r2441, r2442 and q2406 was around 11v, that is, very close to 12v, with tsound not being enough vgs to drive the mosfet. It was observed that the gate voltage slowly decreased to a value around 8.5v, causing the MOSFET to conduct and the presence of 12V on its drain, resulting in the TV image. as q2406 is responsible for the voltage value in the gate loop, it was replaced. | Replace q2406 (mmbt3904 manμFacturer nxp). | Valmir |
| LG |
14FK3RB
L2 |
No sound, turns on with normal image. | Change or remove capacitor c912. | C912 shorted. | Jadson G Nascimento |
| LG |
DHL 625
|
Doesn't start (dead) | Replacement of the diode in the secondary power supply d953 (sr306), diode was shorted | MARCO FERRI | |
| LG |
32LX330C
|
Burning leds | LED voltage changed | Replace 2.7Ω r816 to 4.7 homs | Raimundo Antônio-Acre |
| DVD LG |
DV361
|
Does not turn on, or takes a long time to turn on. | C121 and d121 changed | Swap c121 and d121 | MARCONES DE ARARIPINA-PE |
| LG |
42PQ30R LG
|
TV turns on, stays on for a while or days and turns off. | Power supply capacitor in position 829 with broken solder. solution to solder the capacitor terminals. | All Master Eletronica | |
| LG |
CM8440
CM8440-AB |
The front panel LEDs are off | C 130- ceramic capacitor shorted when connected to the 12v line | Replace. | JOÃO ELETRONICO |
| LG |
21
CW81A |
Replace r839 | 839 resistor replacement | Replace r839 | Cícero ajude pra se ajudado |