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I get horizontal lines on the screen that last from a few seconds to 15 minutes. Lots of little lines that take over the screen, you can't even use the menu. Best Buy says that there is no problem but I say there is. How can I fix this problem?

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These intermitant lines are caused by a failing capacitor in the horizontal output circuit. I've seen this 100 times. The easiest and cheapest solution is to change out all the larger caps in your horizontal out put circuit. They are cheap and you will know you snagged the right on if you cange them all out. Watch the polarity though as this is important. They are clearly marked +/- so this should be no problem unless you are blind. Bad joke. You should be able to get them all for under twenty bucks, add a little elbow grease and your lines will be gone. The main reason you change them all is because it is hard to isolate the culprit when the problem is intermittant. And the second reason, you know they are all fresh. The capacitors job in the circuit is to filter out ripples in current. Eipples in current cause ripples in screen. Some sets employ a horizontal output IC, in this start by changing out the caps surrounding it. If you still have ripples swap out the IC.

Hope this points you in the right direction.
George

Posted on Jul 24, 2008

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