LG TV Repair: Common Faults and Solutions.
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Results: 4834
Results: 4834
LG Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| LG | 29LN300B | TV turns on, the image appears and then the screen goes off, with the LEDs and screen good | Electrolytic capacitors c111 c110 c117 c118 replace without measuring | Carlos | |
| LG | 50PN4500 | TV without image, normal audio. | Following the tip of r201 next to driver 201 I noticed the resistor was in good condition but a winding of the driver transformer was corroded by the transformer glue. | Remove the glue and rewire the t201 driver. | Afonso |
| LG | 50PJ250 | When turning on the TV, the relay would hit and disarm, leaving it only on stand by. | Repeat the same procedure as pj 42 250, join jumper 53 with 73, after this procedure the TV worked perfectly | Eletrônica Power saquaçú Henrique | |
| LG | 43LJ5550 | Flickering or shaking image | Short on screen pixels, to avoid losing the display, disconnect the flat on one side, turn it on and tighten the flat, if the image appears, remove the tracks from the flat. | Tsound will be an image defect but you will be able to use the TV for a long time. | ST ELETRÔNICA |
| LG | VARIOS | Don't know the password | Unlock password | 1st setting key, go to lock from the LCD menu. Click the mute button 3 times, enter 129472 and enter a new code. | Paulo Costa |
| LG | 47LE4600 | TV turns on LED turns white and the display does not light up | Ic403 (mp2212dn) | In the absence of it, I inverted the ic403 with ic407 to test and it solved the problem (it did not generate voltage inv_on(2.8vcc) normal voltages with tv on: 1=0.78v, 2=ov, 3=3.27v, 4= 4.67v, 5=3.25v, 6 and 7=1.44v, 8=3.22v and the only different voltage on ic407 is p6 and 7= 1.83v | This email address is being protected from spambots. You need JavaScript enabled to view it. |
| LG | 37LH35FD /LH50 /LH90 LJ91A | Turns it on and within seconds the screen locks, that is, the image freezes if I was without an antenna, the chisco remains frozen, sometimes the image disappears and the OSD becomes a dark black screen, it freezes the functions, it seems like cold soldering on the BGA or the technician thinks it could be t- con or even the display. | Replace o c414 10uf 16v, o c829 330uf 25v eo c889 330uf 25v | Replace the c414 10μF 16v, the c829 330μF 25v and the c889 330μF 25v, replace the filters and run for the hug! | OSÉIAS |
| LG | 43LH5700 | Standby LED only flashes but does not turn on | Defect on the main board, transistor q2300 is next to the p2300 power connector | I replaced it and it worked again | PATRICK ELETRÔNICA |
| LG | 29FS4RL CW62C | Game doesn't work | C13 - 47uf 25v smd and ec1 - 220uf 6.3v smd solid capacitor short replaced | Resolved | Carlos |
| LG | RF 20CC25 MC059A | Reduced frame without synchronism 80 volts r816 and 842 normal super tip from the friend in the video thanks! | Causes changes in general components. | Replacing r845 1k with 470r was normal | Enoque Dantas |
| LG | CM4330 | Turns on without sound, after a few seconds it goes into protection | 20v zener diode shorted zd905 in front of mosfet q902 | Replace | PATRICK ELETRÔNICA |
| LG | 21FU1RL | Vertical with white line at the top. | R311 and r404 changed. | Mailson | |
| LG | 42LY540H | TV turns on, with normal sound, dark screen with no image, | Main board and t-con with problems, leaky capacitor c205, on the t-con, causing q405 to burn on the main board. obs. q405 powers the t-con but the 2a protection fuse on the t-con did not open, it deduces that the capacitor leak was gradual, overheating q405 and burning it! | Replace both components and the TV started working normally again! | PAULÃO/TECNOSAT SERTANEJA PR |
| LG | 49UJ6525 | Dark, bluish screen | Diodo led | Replace complete bus | Eletrônica Mauri Junior |
| LG | 42LM6400 | The standby LED flashes when you press the power button and the TV does not turn on. | Defect on the main board. | Renan Baltazar | |
| LG | 42PQ30R | TV doesn't turn on keeps hitting the relays tsound are vs and tsound is va sometimes it even turns on it doesn't return to std by via cr | 3300uf/10v electrolytic capacitors c351 and c360 | Joelquin51 | |
| LG | CM4560 CM4330 CM4440 CM4630 CM4650 CM4560 CM8430 | No +b...after changing the ic901....the power supply kept pulsing | Secondary should have (22v standby and 37v working)..but it oscillated at 6v to 10v | Ic901 pino4 +b osc d 12vá19v ... replace r909,r908,r907,r905,d903,c907,c909 | Alextecnico |
| LG | 29FS4RLG CW62C | Turn on turn off | When I checked the transistor diode, resistor, nothing resolved, I decided to change the fly back bsc26-n2138, the TV worked, it was a defect in the fly back | Carlos | |
| LG | 32LK330 | 12v at the power supply, reaches the board, but does not go to the tcon | Q409 on the main board, bottom, close to the lvds output | Replace of the same | Liutec |
| LG | 43LH5150 | TV doesn't turn on so it stays on standby | Check if tsound is a short in the capacitors c520 c523 c524, if the short continues, replace the ic 500 mp3378e | FABIO GUEDES |