Question about LG DU-42PX12XC 42 in. Plasma HDTV

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Lost video on LG plasma big screen model DU-42PX12X

I have an LG plasma big screen that recently lost video output. I still get audio but no video at all. It was intermittent at first and then eventually died on the video altogether. It is no longer under warranty.
I am a novice at TV repair but can read a schematic and have had success with other electronic repair. My question is, "how different is a plasma from a regular TV with regard to the video that needs to be applied"?
Since its already broken I figured I would give it a shot but if I need special tools or diagnostic techniques then I will just bite the bullet and hire a qualified technician.

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LG Plasmas and all plasmas have problems with the sustain boards. You can replace them with just a screw driver to remove back and boards.  Try tritronicsinc.com and andrewselectronics.com and search for Y and Z Sus boards.
They are not cheap and you may want to call a qualified servicer or deal with return cost if they don't work
Classtorations.com

Posted on Jun 15, 2008

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I know this post is old,
But I had the same problem.
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http://jasonkoller.blogspot.com/2011/02/lg-du-42px12x-plasma-tv-fix.html

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Hi,

It seems that some parts are having a problem by warming up the temp.
If you're a technician, try some coldspray on the capacitors of the power supply.

Cheers,
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1 Answer

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