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Lg 50pc55 plasma- has sound but no display??

My 50pc55 tv worked fine until recently when I turned the set on and had the green power light on but no display. Plugged in an av input and sound works perfectly too. Replaced the y-sustain and buffers, but there was no change. If I leave the tv on for a while then turn it off and on again I get sound and the display just shows a pink and green fuzz. Examined the set again and the PSU board has several blown and leaking capacitors that inevitably make a sizzling noise when on. Question is could these caps be causing the tv to power up but have no display / occasional fuzzy display?

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Quite possible-----replace all bad ones and also if possible the voltages coming out of that board need to be tested---to be honest other than the caps it sounds like a main board issue. The set may have been run too long with the bad caps.

Posted on Dec 08, 2012

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SOURCE: LG plasma have an amber light when turning on then green then red

After all the research I found out that the IC on the Z board is bad and new board was ordered and replaced. The plasma work fine after that and picture is excellent with the new board. This forum is great, without this I couldn't fix it myself. Thank you.

Posted on Oct 21, 2009

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