Question about Pioneer PRO-710HD 64" Rear Projection Television

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Top of picture cut off

I have had a Pioneer PRO-710HD for several years. One ongoing minor problem is that the top of the picture seems to be cut off... meaning I seem to be missing a few lines. Is there any way to adjust this? I have read the manual to no avail.

I believe the problem is with the television itself and not the source because I see the same problem with an xBox 360 attached directely to the TV and a digital cable box attached through a receiver. In the past I have also connected a DirectTV receiver with the same issues.

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  • joebenn Jan 12, 2008

    thanks for the reply... I am afraid I ahve no idea what a deflection/power board is (or vertical I/C and caps).

    Perhaps you could point me to more information on these parts - what they are and where to buy replacements.

    Thanks you



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Overscan is a staple in CRT RPTV tech. They didn't design these things with enough memory or geometry/convergence capacity for $ reasons, like they did the big front projectors, which have no problem with this. But RPTVs had to sell at a certain pricepoint, and their hands were tied.

Overscan CAN be taken in, but it hoses your picture to do so. It can be brought back of course, and when resized to between 4-4.5%, will reveal those lost areas of video real estate and show you what you've been missing.
This also has a perk - you will now have more pixels/square inch showing, allowing for higher resolution once the geometry/convergence have beed redone. Once it has all been accomplished, you can typically sit 1/3 closer to your set than ever before, delivering you a half again bigger picture to watch from then on.

Reducing overscan is not easy and has a long learning curve, but is definitely worth it! It is a staple of my calibrations, always available as an extra to the basic calibration package.

Phone consultation is available if you want to try it on your own, with expert guidance from me.

Mr Bob

Posted on Feb 04, 2008

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Sounds like a problem on the deflection/power board....You can try replacing the vertical I/C and caps.......Or go for a new board.

Posted on Jan 11, 2008


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