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Black line down the middle of plasma tv screen. After it warms up the line disappears.

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It sounds like a possible bad connection on the upper or lower drive board.
You could disconnect power, remove back cover (carefully it will have sharp edges) and disconnect the ribbon from the plasma panel to the circuit boards on the top or bottom of the panel.
these ribbons are held down with a lock type conector of different types. Inspect carefully before unlocking connector, once unlocked and ribbon is removed look for any damage to the contacts then reinsert ribbon and lock connector.
If this doesn't work then you will either need to replace to drive board or the plasma panel

Posted on Apr 04, 2008

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