Question about Proscan PS56700 56" Rear Projection Television

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TV Did Not Turn On After It Was Turned Off

I have a 1999 ProScan PS56700 56" rear projection TV that was working perfectly up until this morning. I last turned it off yesterday under normal conditions and today it would not power up. I have the back panel and casing of the TV off and have checked the fuse. The fuse is intact. When I unplug the set for several minutes and then plug it back in and push the power button on the front of the TV, I can hear a high pitched ringing in the TV as if is receiving power, but the front power on indicator light does not shine and there is no light being emmitted from any of the three light sources. The ringing will cease when I unplug the TV. There is a discoloration (rusty burnt appearance) on the Main Chassis Board in the grid intersect area of PP6 as defined by the electrical schematic. The exact location is looking at the board from the back of the TV is to the right of JW12100, to the bottom of CR13401, to the left of PB14120 and the to top of JW12164. It definitely appears like something was there and is now gone/burnt up. However, there is a rusty appearance to the area which leads me to believe that that area had the issue a few years back. Any thoughts on how to fix?

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Re: TV Did Not Turn On After It Was Turned Off

Call tech ..suggest checking horizontal components.

Posted on Nov 26, 2007

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