I have a horiz.line about 1/4" thick across my screen, it is in color and you can tell the picture is moving, sound works fine and you can change channels, in the past this has happened and a couple of whacks on the back and the picture would come back, the tv is five years old.
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the solder joints look fine should i resolder them anyway, and josh you are right it is part no. la7846n
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