Question about LG 42PX3DCV 42 in. Plasma EDTV

2 Answers

Plasma screen went blank.

After a short pop the screen went blank. There was the smell of electrical burning. I unplugged all the equipment. After a few minutes plugged the equipment, i.e. plasma, cable box, receiver, and dvd. All other equipment turned back on and appears operational except for the plasma. Light comes on showing power, but no picture. If it was just not receiving a signal, a screen saver would be on on the screeen showing no signal. Any suggestions?

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  • Anonymous Mar 16, 2014

    tried powering up tv and it made a popping noise and now says no signal if I turn it off and back on sometimes the screen just stays blank

  • Anonymous Mar 23, 2014

    No Signal appears when cable is turned off

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2 Answers

I work on TV's as a living. This problem is called a Y-Main PCB. Common for Plasma TV's

Posted on Sep 15, 2007

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  • 133 Answers

It could be a few components like the tuner or the component that processes the still images to display on the plasma screen, I forget the technical name for it. Either way you look at it, a part has clearly blown and there's no quick fix. You'll need a professional to take a look inside it to determine what's wrong with it. However, if you're confident enough to open it up, you'll most likely see burn marks where a component has burnt out. Mind, if you open it up, not only are you putting yourself in high danger, but you'll void your warranty if you still have it left. If you do in fact still have warranty, my only recommendation to you would be to return it under warranty. Good luck!

Posted on Sep 07, 2007

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It sounds like a component overheated and blew. Most likely there will be collateral damage where other components will also be damaged.
The failure could be in the power supply, or in any of the main drive circuits in the set.
You will have to call for a service estimate. In considering the age of this set, my preference would be to go out and get a descent LCD or Plasma set. The picture quality and performance of these new sets are far superior to the one you have!

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I wouln't waste my time bringing it to a repair shop they will probably tell you to just buy a new one.

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