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

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Picture is dark

Hi, Over the last few months i have noticed the picture getting darker and darker. It is the same in all modes of operation and with all inputs. I had the problem with it poping and going off for a while but it always came back on with a loud pop after a few minutes. It hasn't done that in a while but the picture is almost so dark it is un watchable.

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The trimpots on your focus block will probably need increasing/turning up and rebalancing to remedy the darkening of your picture, which I have encountered a lot in my calibrations lately, of your series of Elite. This irrevocably alters your grayscale and must be done by someone who knows what they are doing. After the grayscale has been rebalanced also, if you then spring for a professional grade optics cleaning the picture you get is bright, cheerful and as good as new. Have had numerous cross the country trips on these Elites this year and last year, testifying to this, with the results of these Mr Bob/Image Perfection calibration tours posted on the AVS Forum.

Upping the SubBrightness in the service menu will help, but is not as good a solution as actually re-biasing the current used in the CRTs themselves, which is what the Screen trimpots control.

The intermittencies you mention are common on this series. The PS - power supply - board needs a virtually complete resolder op, as the solder used in that run of units was weak and thin. It will not get better on its own, any more than needed dental work will.

Send it to me and I will resolder it and send it back. I have done so on a number of PS boards in this series, and am running at 100% success on saving the 510/610/710 series of Pioneer Elites when all they need is the resoldering op. There is a procedure to follow, so contact me directly.

www.imageperfection.com


Mr Bob

Posted on Feb 04, 2008

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