Hi guys, my LG 42" turns on with sound but no picture When i turn it on i can see the back light is working, and i can hear sound but no picture. Sometimes there is picture for a very short period (like 0.1 sec) but then it turns black again. Also there is the power light (red when off white when on like it should be) but when i click something like volume up or input it should blink for a sec (indicates the the tv reads the click) but now it just turns off (not the tv, the power light). I have done some research and opened the tv to look for some bad capacitors over the power board but the seem to look fine... What can cause this and is it repairable?? I would really appreciate any sort of help :) Model: LG 42LC2R-ZH Main Board: 68709M9004 (PP62ABC/LP62ABC) Power Board: 6709900017A (YP4201) Rev 1.3
From this web site it says:
http://www.ehow.com/about_5379235_lg-television-problems.html
Powering Off
Read more: http://www.ehow.com/about_5379235_lg-television-problems.html#ixzz2qeK8T3SU
SOURCE: LG 42 plasma power problem
needs power supply Part number 6709900023A
it is a 171 dollar part, you should be able to order through LG,
SOURCE: Turn the TV on, clicks back off - no sound, no picture
hello, your power supply has to be repaired and you are looking at $275.00 for this job
good luck
SOURCE: LG 47LC7DF Green Light Blinks 16 Times - No Picture or Sound
The lights indicate what the issue is. Kind of like your check engine light in your car tells you something is wrong with the engine.
SOURCE: I have a 42
There are 4 capacitors on the power supply board that need to be replaced. They are green in color. There is also another green capacitor made by the same company in that area that also might need to be replaced also.
SOURCE: LG 42 Plasma try's to turn on but just goes back into "stanby" ?
Check to see if you get Va and Vs voltages from the power supply. There should be some wires running to the y-sus. A couple of those wires will be labeled va and vs. Are they present? There will be a sticker stuck to the panel somewhere telling you what they should be.
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