Question about Sony Grand WEGA KF50XBR800 50" Rear Projection HDTV-Ready Television

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Sony kf-50XBR800 tv turns itself on and off

My sony kf-50XBR800 tv turns itself on and off continuously. Put it on, stays for 30-60 sec, then no picture, audio stays on 1-2 seconds then totally off. The red light blinks 34 times, then comes back on and the cycle repeats until I either unplug it, or manually turn off. I've been searching the net, maybe the lamp, but lamp light doesn't light. Heard about thermal fuse issues. The set was purchased in 2003, never replaced the lamp. Any thoughts?? Is this something someone like myself can fix, at my apprentice type level?

I have this same problem. Please help. just happened Jan24/08 today

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  • Rod510 Feb 07, 2008

    have the same problem, also when turning the tv off the standby light flashes 5 times pauses and does it again. I have the kf60xbr800 bought in 2003

  • holjencin Feb 19, 2008

    I have the same problem....Does anyone know a fix?

  • Anonymous Mar 01, 2008

    I have the same exact problem.. Any idea how to fix it?

  • ohaeg Mar 08, 2008

    My KF60XBR800 was working fine for 5 years and just started doing the extact same thing last night. Driving me nuts! Research on the web shows it's either 1) replace the lamp or 2) replace the power supply block for the lamp or 3) replace the driver/engine for the lamp. 1 and 2 are affordable DIY fixes, 3 means buying a new TV. Anyone out there have suggestions for us?

  • ChiCowboy May 20, 2008


    I have the identical problem with my Sony KF-50XBR800. Did you ever find a solution.

    Thank You


  • hotfoot1 Jul 20, 2008

    My Grand Wega is having the same problem. It first started after I moved the set to paint the room. It did this for several hours and resolved itself. A couple of weeks later it did the same thing and resolved itself after I let the TV run for several hours. Now it just does it constantly. Before I request a technician, I'd love to hear from others with the same problem. There seem to be a lot of them out there.

  • DuncansDad Jul 28, 2008

    Exactly the same problem same model (also bought ours in 2003) - good picture for the brief time before it shuts off again.

  • Anonymous Aug 09, 2008




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I just purchased a replacement lamp off ebay and the TV is working fine now. Color looks better too (which I guess I should have expected). Search for "REPLACEMENT LAMP SONY XL-2100U" on eBay and look for seller "niosales". I paid $129 out the door. Their are other auctions for this lamp you can check out. Make sure you look at lamps that include the entire lamp housing, not just the bulb.

Posted on Mar 14, 2008


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