Search: 42PJ350
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42PJ350 Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
LG42PJ350
Do not turn on, relay arming and disarming right after calling.Cold weld in the main power supply.Resonold in the pins of all transformers, mosfets and power resistors. To avoid future failure points, also resolve components in which they appear to have little welding.Moises
LG42PJ350
Normal operation, however, after some time it keeps turning off and on indefinitely.Thermal pad of the mosfets dries up, solution remove the screws from all the mosfets, remove the old paste and apply new paste to finish, replace the screws.Ferraz
LG 42PJ350
Does not tune channels22Ω resistor connected to pin 71; from IC 602 or the bad IC itself, in my case it was the ICReplacement of IC 602 or resistance connected to pin 70Cabeça
LG42PJ350
Grainy picture and black spotsAll ysus components were tested, none of them were bad, I went to vsus, the defect was vsus, even without a single bad component it was showing this problem.Faulty vsus and not a bad componentCabeça
LG 42PJ350
Turns on without picture, voltages are all ok, says voltage vsc=135-+Fuse fs201 openCabeça
LG42PJ350
Blurred imageResistor set down r729 2r2 2w abertoReplacing the resistorTECCENTER
LG42PJ350
League without imageMeasuring voltages of +15vf +5vf were high and oscillating, the cause was the breakage of the copper wire in the t501 transformerResoldering the wire or changing the t501 transformerKel Araujo Assistência Técnica M6
LG42PJ350
White strip at the bottom and offCold solder on the large coil l1 of the zsus boardMarcelo
LG42PJ350
Turns on with everything perfect, works for a short time, turns off, and turns on constantly.Check the insulation of the internal wires of the lvds signal cable, in my case the heat from the TV dried out the covering of the wires and it peeled off, leaving them shorting each otherArrange for the cable to be replaced or, in my case, insulate, (I used hot glue)Edfersom
LG42PJ350
Does not tune channelsReplacing the 20r smd resistor r-643 which is close to the ic-602On some devices it is under the glue on the hdmi connectorPedrinho
LG42PJ350
Turns it on, hits the relay then turns it offShorted power supply boardDiodes: d801, d802 and d304 open, resistors r101 and r998 open, zener diode zd 701 shorted, capacitors 360 and 361 with leakage, 2 transistors fchs20a12 (ey552 and ey553), 1 transistors fcf10d60- ey512 shortedGbrito
LG 42PJ350
EAX61332701
Dark image, blurry image, grainy image,Ysus defective replace r-729Replace the 2r2 resistor with another equal one and check if tsound is cold soldering on the ysus and power supply.Maike Sorriso-MT
LG42PJ350
Drizzled imageR729 2r2 open. to replace.After changing the r7129, it showed a greenish vertical stripe on the right side, cleaning the t-con flats resolved it.TECNOBRU SBC
LG42PJ350
Arms and disarms the relay, without tension vs and vaLeaky transistor q358Replace transistor q358Arnoltec
LG42PJ350
Does not tune channels.R642 or r643 openReplace, the value is 22r.EDTV Miriambi
LG42PJ350
Gives sound. tsound is no imageAll panel voltages ok, 15v@18v ok. tcon led off.With the TV on, I tapped the tcon's ic xd and the image appeared. bga ic xd failure. replace tconEmoniz
LG42PJ350
42PJ350-SA
When turned on, the relay arms and disarmsYsus shorted. Short identified on the board's fets, possibly caused by dry thermal paste.Replaced two 30f124 and two 30j124 that were shorted and applied new thermal paste to all components of this board. I also advise you to resolder the power supply board and zsus, as they were already quite bad.Flavio
LG 42PJ350
Power supply arms and then disarmsTransistor q-906 shorted.Replace the sameRégis
LG42PJ350
The TV turns on and has all the voltages and sound, but tsound is no image. as x normal league.Ic100, reg 3v3 smd atrás tcon.I fixed it and it came back normalJoaomvjr
LG 42PJ350
Image with blurred black spotsResistor 2r2 r729 open y-sus boardNote: this defect also appears on the 42pj250eletronica junior reginaldo moronte