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Why are there colored vertical lines

these lines vary in width. Some close together and others farther apart only on the left side of screen. Samsung Plasma model PN50C550. Have had this problem for some time now not wanting to take it in. Very annoying. Replaced main logic control board with no success. P/N BN96-12957A (LJ92-01702A)

Answered! View the answer I have this problem too

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alan this is difficult to answer since we cannot see what you see. Consider posting some images of your display with your question. Use this guide for that. Going by your description alone, my first idea would be a bad tcon board, second a bad LCD screen.

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alan will be eternally grateful.
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