Our Sony 53HS10 RPTV has suddenly developed a problem. I was hoping someone here might be able to help diagnose what it is before I start looking for repair options (and I'm praying that perhaps there is some sort of home repair I might do to avoid the cost - I'm comfortable disassembling computers and wouldn't feel threatened taking apart the TV.). Here are the symptoms: S and composite video signals from all the inputs are highly contrasted and banded, so that when you see a black letter, its very dark and a dark shadow streams away to the right. The RGBHV and component video inputs however project normally when you switch to those inputs. If you hit the menu command for the TV, the menu is also normal and doesn't have this strange banding or super contrasted look as it overlays the banded picture. Now something weird... if you use picture in picture, one window will have the banding for those inputs, but the other will not, even if its source is the same input. Thus I can split the screen into two halves, and one picture is fine but the other sucks, but both have the same input source. Unfortunately you can't make the good picture active and go back to it... once you exit picture in picture mode the poor quality returns. The inputs that didn't have the banding are also fine in picture in picture mode. I'm certain the problem is not due to a source external to the TV, as I've unplugged everything but a single input, bypassed my receiver and swapped cables and switched sources between DVD and other components with the same symptoms. A DVD for instance appears fine in component video, but crappy in composite or S-video. It did this once before about two months ago, but the problem only lasted a few minutes and then went away again so I thought it might have just been a bad satellite signal or something. Thanks in advance!