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If you have the same probleme on every chanel and even other sources like DvD. Then your TV has a serious problem either on the motherbord that controls the image or the Plasma matrice itself.
In this case there will be only one thing to do, contact your retailer or directly the LG customer support.
If you open the back,look at the can shaped items.If any of them have the tops bulged out,they need to be replaced.This should solve your picture problem,unless there is something else wrong.What is happening,is they are heating up,and the picture goes out.I bet the longer you have the TV off,the longer it stays on?Hope this helps.Thank You very much!
Tyler
Is the sound ok. Yust the Picture. If both dissapear replace power supply board. That is the main big board with the most heatsinks on it. Main power gos from a switch board to main power supply.
yes it can be down to signal degradation especially via scart lead, make sure you use a decent scart if you buy an expensive one you can tell the difference.
Run a cable from your sky digibox direct to your tv to see if the picture improves.
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