Question about Sanyo DP42746 42 in. Plasma Television

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One black line going down the screen

When we are watching the tv there is this thin black line that goes down then tv. the only way that we have figured to get the line off is to turn it off and turn it back on, but it does it all over again. we cant enjoy watching a hour show without this happening over and over again.

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  • Sanyo Master
  • 5,568 Answers

The individual dots (pixels) that make up the picture are controlled by vertical and horizontal drivers that are rapidly switched off and on. They are arranged as columns and rows with these further controlled in time in a synchronized fashion. The vertical line is being caused by a driver that is failing after being warmed from operation.
Depending on the degree of integration, these final integrated circuits may be part of the display and not individually replaceable by hand. You may only have the option of replacing the screen with the failed part.
It will be necessary to contact Sanyo (who may not have manufactured the set) to find whether the repair is cost effective.
If it is too expensive to justify, you might be able to use a fan to circulate air through the louvers of the back. This may prevent enough heat buildup to keep the IC operating correctly.      

Posted on Oct 01, 2008

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Posted on Jan 02, 2017

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