Question about Mitsubishi VS-45607 45" Rear Projection Television

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Mitsu vs-5042 Works then picture goes out. Thumping works sometim

My mitsubishi vs-5042 comes on with picture and sound. The problem is the screen goes blank. A line of white and color will flash midway up and all across a few times then it will stay blank. I can thump it (sometimes very hard) on the left side and the line flashes with each thump and occasionally the picture pops back onto the screen. Audio works fine the whole time.

What is going on?

Thanks!

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If you occasionally have a picture then you stand a good chance of repairing this tv. There are bad grounds on the deflection board. Start with the board that has the flyback. I do not know the year of your tv. Sometimes the same model may have an option improvement than one couple of months earlier. The first suspected problem would be the vertical IC. In some cases this ic is located on the convergence board and in others the flyback board. It has seven pins and is the TDA version. Located on a large heatsink. Resolder this and any other grounds on both board. Some will tell you the P I P board is bad. This is a free standing board that can be removed and replaced. But please do the earlier option first.

Posted on Jul 12, 2009

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