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Post originale di: Abrsvc ,

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Lines that appear in this fashion can often be resolved by a simple re-seating of the cables that go to the panel. The voltage/current levels of the signal lines is so small that it doesn't take much dirt or corrosion to prevent data flow.  Re-seating the cables can resolve this. If the simple re-seating does not resolve the problem, try applying heat or cold to the area on the T-con board.  This too can show poor connections or a defective IC to confirm the location of the problem.

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