Question about Sony KP-53XBR200 53" Rear Projection Television

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Snowy picture in all video sources -Sony Kp53xbr200

I am getting a snowy picture in video sources on this television, the PIP looks great but full screen is snowy in all video inputs and sources even using the S-video inputs. I spoke with a Sony Technician who said I possibly need a logic board.
Do you have any suggestions and if I do need a logic board, where can I get one, I am told Sony discontinued making parts for this model.

Help

Kenny

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  • hektorolguin Jul 22, 2008

    my problem is the tv is on in only green foer 10 seconds y off only audio

  • 24money Jan 10, 2009

    My tv has snow but in TV mode only. I put a dv and nothing i get a Perfect picture. This the 2nd tv in 6 months same problem.
    first was a toshiba. I fixed the convergence and then about year later color snow lines that appear to move across the screen. Soi bring up another tv sony... fixed convergence on this tv and 3 months i have snow on this tv. i thought it was the cable... What could the problem be? The dvd works fine the tv doesn't... DVD is perfect! The snow on the tv is getting progressively worse now though. Is it time for a new tv? I'd rather not...

  • 24money Jan 10, 2009

    2 tv s same problem... 1st tv had a convergene problem fixed it then about 4 months later these color like snow lines become visable. DVD pic is perfect, but the tv pic is snowy.
    2nd t v i fixed the convergence on it and then about 2 months later swnowy color lines come across the tv... DVD is perfect.

    The tv's were put into the same cable hookup. I exhanged the cable box thinking it was that but still sme problem.

    Any help?

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I'm working on the same problem. I posted a little about this problem under another question for the 53XBR200. From what I've learned so far with experimenting and studying the schematics is that the problem is with the BR board which is the module that handles upconverting. PIP video goes through the BM board/module. You can pull the BR board out of the set and still have the TV work as long as you keep it in PIP modes. Likewise, you can pull the BR board out, but the set will turn off if you try to go into any PIP mode. The problem with static on every input only remains in full-screen video. As you've noted, all inputs work fine as long as you remain in one of the PIP modes. It does look like the BR board is discontinued. I would like to know how to get a replacement/repair if anyone knows about this. My only hope to get this set functional again is to either force the video to bypass the BR board, or repair the BR board itself. If it's a discrete component on the BR board (capacitor, resistor, transistor) then it might be possible to salvage a repair. If it's one of the upconverting chips, then we might be SOL. I've tried to jump the video signals around the BR board, but this didn't work and the picture looked distorted. I think the problem with this idea is that the video processor might be expecting 480p/960i video and by bypassing the upconverter I'm sending 480i video into the video processor. I'm going pursue this idea some more as it might be the only way to salvage the set from the trash bin.

Posted on Jan 02, 2008

  • Rev Engineer Jan 04, 2008

    Looks like the signal coming out of the upconverter chip on the BR board is very noisy. I suspect the DAC inside this chip is toast. The chip is not available as well as the BR board. This set may very well be headed to the trash bin. Anyone needs parts from my set to fix other problems?

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