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.



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Re: Snowy picture in all video sources -Sony Kp53xbr200

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

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When tv is turned on with cable channels picture is snowy. when dvd or vhs tape played through tv the picture is snowy

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What to do if you have an all snowy picture (blue screen or the TV displays unusable signal-no signal or no sync)
1 – If you are using a digital cable box or satellite receiver (make sure it’s on) and be sure your TV is set for either CH3 or CH4 (which ever you usually view it on). If you usually view it through video inputs (video1 or 2 etc.) make sure the appropriate input is selected.
If you still don’t get a signal see if you get picture using the DVD or VCR (if available) if you do than plug the satellite or Dig. Box temporarily into the place of the DVD (unplug DVD) you may have to use some A/V cables (RCA yel./red/wht like the ones on the DVD) to hook to the tv from the sat./dig. box. If you get a signal then the sat./dig box is ok. If not the Sat./dig box is not sending a signal and is either defective or needs to be rebooted (unplug wait 5 min try again).
2 – If you are using standard cable or antenna (source) if possible check that the source is good by connecting to another TV. Otherwise try running the source into a VCR and then out to the TV using video inputs (RCA yel./red/wht like the ones on the DVD) and then selecting the appropriate input. Try seeing if the VCR plays using standard CH3 (or CH4)
If the VCR plays on video input but not when connected to CH3 (CH4) then the tuner of the TV may be defective – see if you can use the VCR to change channel using the VCR remote.
Be sure to vote/rate me if this helped Thanks!

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Snowy picture comes about when the signal coming in the RF INput (Ant/Cable) at the back of the unit is below a certain level. If this is the case, then it is not a problem with your TV but rather your aerial (antenna) or the cable from your provider. A way to verify that it is the ant/cable that is the cause and not a defective TV/tuner is to hook up an old VCR set to Ch. 3 or 4 to the RF IN of your TV using a short 75 ohms coaxial cable terminated at both ends with FP-5 connector. Play a known clear good tape and set your TV to Ch. 3 or 4 as the case maybe. If the picture is relatively clearer, better, then you have just confirmed that it is indeed your aerial or your cable (provider) that needs looking into. If on the other hand, the VCR signal is also snowy then chances are that you have a problem with the input stage of your TV including possibly your tuner.

For your aerial problem, antenna orientation or replacing with a higher gain antenna might help solve the snowy signal. For your cable problem, you have to call-in for service from your cable provider. If it is a TV problem, your best course would be to seek the services of a qualified TV technician since this involve electronic circuitry analysis, diagnosis and possible component replacements.

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Hope that this be of some help/idea. Pls post back how things turned out or should you need additional information.

Good luck and kind regards.

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