LG TV Repair: Common Faults and Solutions.


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LG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
LG32LJ600B - XXLJ600B
LJ7		No image, 12v missing on lvds cableCheck c3245, close to the 19v jack.electronicssupplyparts - Gramado/RS
LGL1953S
Doesn't startIn the power supply, 4 capacitors are swollen c202 - c204(1000µf)/25v, c203(680µf)/25v, c207(470µf)/25vReplace capacitorsMarco Marques
LG32LK330
When connecting the input fuse blows221/1000v capacitor next to the 6r280 transistor with leakageReplace fusivel e o capacitor
LG32LW5500
The screen does not light up, the LEDs light up but do not come onBad contacts on the computerRemove the heatsink and reflow the computer
LG32LK330
Works for hours, however, occasionally turns off and restartsCapacitores no inverter c19, c20, c21, c22 e c23Replace capacitors
LG37LE5300
Turns on without image on screen. with ok.Ci no led driver defectiveSubstituir ci as3693bVital
LG32LG32000
Does not turn on, dead power supply.Short in the power supply primary.Substituir transistor (p9na60), res. 0,33ω, r515 (33ω), r516 (10ω), r520 (1kω), ic ncp1207ERP-ASSIST
LG55UK6750
No image, LEDs light upTsound is a lack of 33v in the screen power supply.Insulate binding tapes.
LG32LJ590U
Doesn't work. power supply inoperative.Power supply inoperative, fuse blown f9901(5a)Substituir f9901(5a), fb9101 (0r33), q9101(8r1koce=20n60c3), d9107 (diodo), r9110 (68r), r9109 (10r), u9101 (3s121), c9118 (100pf), zd9108 (zener)ERP-ASSIST
LG32LJ500B
Turn it off and on againZener zd9108(5v1) shortReplace zd9108Pablo
LG42LW4500
Turns off after some time.Cold welds on the main power supply transformerPablo
LG55LH630V
No backlight, no image.Short in one of the panel supplies.Check and replace input panel capacitors (c27x)Pablo
LG60PB650
TV turns off after a while and sometimes doesn't even come out of stand byHigh vs and va voltage, triggering vs_det protection which is normal for this 2.7vChanging the power supply photo couplers, mainly ic903 and ic902. questions 82 9 93677063Carlos Araújo
LG50PG20R
Turning off by itself, audio disappears, turning on and off after warming up for a few minutesReplace c1118,c1128 and c1110reginaldo moronte,eletronica junior caldas novas
LGCP-14J50
MC83A		SchemeHttps://www.yoreparo.com › tv › tube diagram tv lg cp-14j50 - yoreparoHttps://www.yoreparo.com › tv › tube diagram tv lg cp-14j50 - yoreparoWesley Borges
LGCP-14J50
MC83A		I'm soundReplacing the d203 diode in the corner of the board close to the sound output,Diode d203 in short replaces the sameWesley Borges
LG42LC4R
Does not turn on - no standbyR508 2r2 open - power supply only had a voltage of 57vReplaced 2r2 resistor r508HERMES
LG22MA33N-PS
This TV came to me when it turned on normally, but the audio gradually dropped until it disappeared. When I pressed the mute button repeatedly the audio came back on and 5 to 10 minutes later it disappeared again.In my case it was the external power supply with low capacitance capacitors. Either you change the external power supply or repair it yourself. Good luck!(D.S.E.Eletronica)
LG50PB560B
Image disappears after 10 to 15 minutesCheck c445Arnaldo Murta
LGFFH-V386
No audio12v missing in voltage regulator ic705, q311 (2sa1273) shortReplace q311Matias ERP