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 | 32LG30R | TV turns on, but if it turns off it is very difficult to turn it on again. | Change the value of resistor r128 from 11k to 15kΩ | Eletrônica Marinho BH | |
| LG | 50PN4500 | No image, with sound - it wasn't the open 22r resistor near the t201 - underneath the heatsink tsound was a burned smd capacitor, and it burned the 2 fets 30f133, (igbt) which can be substituted for the fgd4536 used in samsung tvs (plasma ) | Change two fets 30f133 = fdg4536 (samsung plasma) | VICTORINO | |
| LG | 32LM3400 | Does not turn on, no stand by. | R506 changed from 75k to 50k | Replace with a 75k resistor. | Antoni Garcez |
| LG | 42SL90QD | Turns on, but no image appears, nothing appears | Processor reflow or reballing | As already mentioned by colleagues on the forum, I reflowed the processor, that is, thermal blower at 450º for 3 minutes on the processor (without the heatsink) | Claudio Eckert |
| LG | 14FK3RB MC059D | Normal turns on with an image without characters with a black band in the middle of the screen and after a few seconds the image keeps scrolling and shaking | D405 | Swap without measuring the d405 and the TV will work normally. God be praised | Sinailson furtado |
| LG | 21FU4RLG | Low power supply +b giving only 87v. | C847 1uf for 250v It is important to test the ESR before changing. | Replace c847. (tec. edfersom, varjota-ce) | Edfersom |
| LG | RP29CC26 RP29CC26 | Image closed on the sides 3cm | Resolds part of fly e d401 cold welds | Resolds part of fly e d401 cold welds | XLA ELETRONICA |
| LG | 43LJ | Lower backlight voltage. | Change r801 to 2r2, voltage drops from 65.5v to 61.8v. | electronicssupplyparts - Gramado/RS | |
| LG | MCT-704 SOM LG | Does not turn on, primary power supply does not oscillate | Capacitor c931 of 10 nano polyester with zero capacitance and c986 of 1000mf 10v practically zero as well | Device turned on normally again | jorge.tec |
| LG | 42LC4R | Turn on the backlight and then turn off the audio | On the icu301, place a 10k resistor on pin14 to ground | Putting r10k to ground disables the IC protection and abs works normally. | eletronica formosa |
| LG | 42LC4R | Power supply has 5v but does not turn on the stand by | Changed 10k r208 resistor | This resistor is at the photo pc130 output | eletronica formosa |
| LG | 14FK3RB | Presents an image with flickering in the horizontal direction, (weak shadows running from top to bottom) appears only in RF. | Defective varicap channel selector. | Replace varicap. (tec, edfersom varjota-ce) | Edfesom |
| LG | 50PB650B | Image with several red dots, leaving a red image | On the y-sus drive board, I made adjustments to the vr201 and vr502 points, cleaning the image | Alberi F S | |
| LG | 42LB9RTB | No image, hdmi problems | The lack of image was related to the cable that connects the power supply and the inverter board, the cable was completely charred, while the problem with the hdmi ports was caused by a lightning strike in the decoder | Replace the inverter board cable and connector, replacement of the ic1200 (sil9021ctu) hdmi controller, q1202 (aly - 2sc3875), r1215 to r1222 (3r3), ic1202 ( 24lc02b) - note: record data with content from the ic1201, d1201 (b3 - kds 184s), r1237 and r1238 (100r), r1279 and r1208 (1k), r1255 and r1254 (100r) | CDS_DIAS |
| LG | 21FU1RL CW81A | Little contrast. white image. | Remove d501 next to q16 | Ricardo Silva | |
| LG | 50PJ350 | Turns on and off in 1 minute image is normal without damage | D304 changed on the power supply board | Obs: diodo 40v 1,5a | Francisco Medeiros/ Barbacena MG |
| LG | 49UH6100 | TV with image jumping | Problem with the screen board | First I removed the left flat and turned on the TV, the image was half white and half black but it didn't jump, then I removed the right one and turned on the left, it was half white and black and the image kept jumping, that is, it was on the left. the defect on the board, I put adhesive tape on the right part of the left flat (a small piece) and the image was normal, this part is very sharp and the image may also have small lines of traces. | Eletronica Muniz |
| LG | 60PB6500 | Does not turn on, stuck on red LED | Voltage-free 3.3v regulator | Replace ic608 | Rmseletronica |
| LG | 21FX5RL | No image. just with lines on the screen | Fr501 and d505 with problem on the 180v line | D505 e fr501 | MARCONES DE ARARIPINA-PE |
| LG | 21FX5RL | White screen with retraction lines | D505 and fr501 defective. on the 180v line | Replace fr501 e d505 | MARCONES DE ARARIPINA-PE |