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 | CM8450 | The sound would turn on, but then the "good bye" message would appear on the screen and turn off. | Micro switches on the panel were leaking (they were oxidized which generated current leakage). In my case, the "folder", "function" and "enter" keys were the ones with the most obvious oxidation. I noticed that when I touched the keys, it didn't give the "click" that it should, so when I did a visual inspection on the front plate, I checked the oxidation and then confirmed it with the multimeter. | I replaced all the microswitches on the panel with new ones and removed some oxidation on the tracks and then applied enamel to protect the copper. | Fabiano Ferreira |
| LG | CM8350 | S-protec sound I am 88178817 | Lack of 5v on pin 3 of ic207 88178817 | Test the resistor that is connected to the ci, remove it, clean it, put it in to see if 5v comes back, if not, replace the ci | marcos melo cascavel ce |
| LG | 42LD420 | Turns on and off in a few seconds | Jam the resistor r 610 (smd) | J D M | |
| LG | 50PB690B | Does not turn on, when pressing the power button the TV turns on, turns on the screen quickly (blinks and turns off) and repeats this cycle several times | Ic3303 hdmi controller heating up, measuring the input terminals and tsound was variation in one of the pins | Removed and the TV turned on immediately, after some testing time, the ic3303 ( sil1292cnuc ) was replaced with a new one and everything was perfect. | CDS_DIAS |
| LG | 32LN549C | No image | Burned out LEDs (TV LEDs are compatible with models of the same letter) | To confirm, throw a cell phone light on the screen with the TV on to see if it appears immediately, without an image, then open the TV carefully, remove the screen, remove the films correctly without changing the order, access the LEDs, check the LEDs replace the bus and that's it | Gbrito |
| LG | MCT806 | No sound, display on normal and power supply 48, 12 normal | Voltage of 3.3v that feeds the ci pwm ic602 (ps9850) low, 1.2v replace of ic603 ak5358 that generates the 3.3v | Protec Eletronica | |
| LG | MCT806 | No sound, display on normal and power supply 48, 12 normal | Voltage of 3.3v that feeds the ci pwm ic602 (ps9850) low, 1.2v replace of ic603 ak5358 that generates the 3.3v | Protec Eletronica | |
| OLG | CM4640 EAX65422801 | Turns on and a few seconds goes into protection | The defect and bad pc 903 coupler photo | Replace the PC 903 photo coupler | nadobom |
| LG | 42LH20 | Doesn't start | Short on power supply board, replace power supply board | Gbrito | |
| LG | 32LN536B | Turns on, but the screen flashes and the LEDs do not light up | A burned out LED with a defect on one of the buses | Carefully remove the screen, remove the film and store it in the same order as it was, turn on the power supply with the connection to the bus connected to the board, observe which led is burnt out, replace the defective bar or led | Gbrito |
| LG | 32LD460 | TV doesn't turn on, the LEDs don't light up | Ci. str w6053n with problem, input fuse opened, check photocouplers, capacitors 450v 68 uf, resistor r518 opened, zener diode 5.6v address zd503 is shorted | Replace the c.i, input fuse, replace defective photocouplers, check the 450 capacitors, replace the resistor r518 and replace the zener diode | Gbrito |
| LG | 49UJ6565 | Bus replace | Blue leds | A solution already sent sound, says to remove a resistor r808. You should actually remove this resistor and replace it with r804. Then you have two 2Ω r on each bus and not one with 1r and the other with 2r as done previously. | Claudio Pietrantonio |
| LG | 42PJ350 EAX61332701 | Dark image, blurry image, grainy image, | Ysus defective replace r-729 | Replace the 2r2 resistor with another equal one and check if tsound is cold soldering on the ysus and power supply. | Maike Sorriso-MT |
| LG | 42LB6200 S | No image with sound only lights up LEDs | Capacitor c 202 shorted on the display ruler | Replace of the same | ELETRONICA GASPAR |
| LG | CJ65 EAX671544402 | Doesn't start | Ic 101 | Place a step down voltage regulator regulating the output to 1.25 volts | TV SAT |
| LG | CM4440 | Turns on without audio and goes into protection | In my case it was the 3 resistors r915, 916 and 917 that were broken (torred) and did not pass power forward, I replaced them and it was fine, you can even solder them and you can use them | And it was zero | Eletrônica Moura trindade go |
| LG | 50PB560B | Missing 18v on ysus | Ci ic251 close to r253 large 220k resistor | Replace your ci and run to the hug | Gilberto Costa |
| LG | 50PB560B | Oscillating 18v | Ci ic204 three terminals broken | Replace the same and run for the hug | Gilberto Costa |
| LG | 50PB560B | Missing 18v on ysus | Ci ic251 close to r253 large 220k resistor | Replace your ci and run to the hug | Gilberto Costa |
| LG | 32 LN5400 42LN5400 LJ36B | Doesn't start | Short circuit on the main board. 24v line on main board short circuited. | Smd capacitor c3417 value 10u x 35v short circuited near the audio amplifier. | rafaelmoraes99 |