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I have a 50" LG plasma TV - model 50px1D (3 and 1/2 years old.) Recently, one or two vertical black lines have appeared on the screen. Initially, they would disappear about 15 minutes after the TV was turned on. Now, they come and go at irregular intervals, Sometimes remaining on the screen for hours at a time. The lines are uniform, but sometimes thinner or thicker than they were the day before. Any suggestions?

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Hi,

A line conditioner or rerout your cable from where it comes into your house to the TV.
If no, you should check your power supply board. The capacitors on the power board are likely going bad. Don't keep using it like this. Either check the board, buy the same value caps and replace them, or order in and replace the entire power board. The latter is the easiest to do. Remove rear case and inner shield, replace the power board and reassemble.

Thank You

Posted on Jun 01, 2009

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