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Distorted picture and sound on plasma tv

We have a Panasonic Viera plasma tv with seperate set top box, only about 12 months old. Recently the picture and sound have become increasingly distorted. The picture has squares of distortion and the sound is quite 'electronic' sounding. It started a little bit across the bottom of the screen and is moving up with more distortion in the sound. We have no problems with watching DVDs or pay tv, it is just the free to air channels. I hve tried reinstalling the channels thru the set top box (Topfield TF4000T) but it did not help. I have checked the cables to see if they are loose, but all appear okay.

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Posted on Jan 02, 2017

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SOURCE: Plasma TV

Try to reset the TV to factory defaults and see if that helps. Record your color settings and any other setting your have in your config before dong this because all will be lost.

Posted on Jul 25, 2007

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SOURCE: Picture full of lines and flicker

Zdenko did an excellent job. Voltage regulators and the capacitors on the main boards and in the power supplies are always suspect. Some times you can narrow down the culprit buy purchasing a can of freeze spray. Let the TV warm up and try freezing suspect components to see if this causes a reaction. Thermal problems can often be found in this way.
Of course, if you're not able or willing to replace components on the circuit boards, you can always replace the main board or power supply board after determining which is causing the problem. These parts should be available at your local Viewsonic service provider at a reasonable price.

Posted on Feb 14, 2008

  • 1 Answer

SOURCE: Aspect ratio problems on Samsung LN-S2651D Flat Panel TV

The aspect ratio (zoom) button on the cable remote had been changed. On Brighthouse the # button toggles through the zoom settings. It's not a tv issue, it's a cable fix.

Posted on May 30, 2008

  • 225 Answers

SOURCE: just out of warranty Dell TV W3706MC,two years old

Sounds like a bad video board. No easy way to fix a bad video board. It needs to be replaced. That is why the repair shops will not fix it; they do not stock video boards for all models. And it is a pain to track one down all of a sudden. Once a warranty is up, you are running on bonus time. Electrical components have a definite lifespan. It is possible to recover some money by selling it "as-is" online somewhere. You could get 200-400 for it broken, pretty easy I suppose.

Posted on Nov 14, 2008

  • 20 Answers

SOURCE: 42 LG Plasma picture distorted and flickering

replace the control module.

Posted on Mar 11, 2009

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