Question about Mitsubishi WD-52525 52" Rear Projection HDTV

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My picture has veritical lines all through it.

My screen has vertical lines going up and down. kinda like an old vertical hold on old tv's. it is a 50 inch projection.

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Change the input to something else...like a DVD. Is it still there? If not, you have a signal problem either outside the tv..or perhaps a bad tuner. Do you have a computer near the tv? Or other high tech device near the unit? Try turning off any hi-tech devices in the house and check to be sure the connections are good to the tv and/or cable or satellite box.

Posted on Aug 01, 2009

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Vertical white lines appear on the screen. Samsung provides the following information but doesn't say what circuitry they are referring to. Samsung says: DLP TV: I Have Vertical White Lines...


That answer I agree makes no sense.

Most of these sets have NO vertical hold and if did it will not cause the lines.

A brief educated guess:

Set has a main board that communicates and controls the screen--tests for that are not simple (checking waveforms with a scope and signal generator).

The model indicated here is a DLP that uses a lamp (let me know if model listed is not the one you have).

In DLP sets aside from main/digital board you also have a optical light engine---it processes all signal in and out to the screen.

Optical engines do fail and cause some simple and some complicated picture issues.

Some will even cause the set to "lock up" with a picture or strange looking screen---clue to this is you have to shut the set off by pulling the power cord.

The set may be old enough they do not really want to help you or even talk about it.

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"Guest" obviously has no idea what he is talking about. There is no such thing as "frame section" and if the vertical IC, ramp generator or vertical hold circuits were bad, you would have no vertical at all. If you mean that there are thin white lines at the top 3 inches of the picture, and the top of the picture seems folded back on itself, it means that the pump-up capacitor is going bad in the vertical output circuit. This is a very easy thing to correct but should be done by a qualified tech.

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