Diagnosing LG Plasma - Video of symptoms

[mykhuh]

Hello All,

I have a LG 50PX1D-UC Plasma that I'm trying to diagnose.

My research so far narrows down likely culprits to the main power/ysus/zsus boards but I thought the video I took of the picture may be more indicative for more experienced...

Video of problem
http://sdrv.ms/14Re7vV

The best clearest part of the video is about 20 seconds in.
The 'no image' screen saver is very blotchy (improved quite a bit as tv warmed up) There's random white pixels around the black screen. Image is generally dim and noisy.

I checked some of the voltages at the ysus input and outputs and they seemed consistent and within range...Where else should I probe voltages?

None of the buttons seem to do anything in terms of switching inputs or bringing up a menu. I'm going to probgram a universal remote as I did not get one with the tv.

Thanks in advance!
-Micah

[tom66]

Re: Diagnosing LG Plasma - Video of symptoms

The Z-sustain is bad.

[cadiman]

Re: Diagnosing LG Plasma - Video of symptoms

I have replaced more Z boards on these panels than Y boards.

I am thinking a lot of the Y boards were replaced under warranty with these.

A re-chip is around 100 bucks. It will cost that in ipms doing it yourself and they are not that fun.