Question about Sony KP-51HW40 51" Rear Projection Television

2 Answers

Sony KP 51HW40 Rear Projection tv red flashes

Our tv flashes red and then it shuts itself off. We recently replaced the high voltage part, which seemed to fix it for awhile, but the problem started up again a few days ago. It happens after the tv has been on for awhile. The error code blinks 6 times. Before, it blinked 8 times, which is why we replaced the high voltage part. Please advise. It is getting annoying...

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  • dothompson Jun 01, 2008

    Thanks for the info. I think it went over my head, but I'll do some checking. Since I posted this problem, the tv has started blinking 8 times again, as before, and flashing red on the screen, and shutting off. We turned down the red crt, which messed up the colors, and adjusted the colors, etc. on the tv, and it's better than it was, but not great. We haven't had any more flashes on the screen nor shut offs since then. We didn't know how to clear the error code after our first fix, so we don't know if that has anything to do with the number of flashes or not. Could it be that the red CRT is going bad?

  • cftygv Jun 07, 2008

    its the same problem and I was hopping to get some more detailed info.

  • Anonymous Jun 14, 2008

    My KP-51HW40 after warming up (approx 10 min) a red flash apperas on the screen and the TV goes blank. I counted 8 flashes. On turning the TV off and on again the picture resumes but the problem reappears. What do you suggest I do. Will sony repair withour charge, my warranty expired a while ago. Tahnk you

  • AMANDAFIL Dec 09, 2008

    MY TV FLASHES RED AND SHUT DOWN BY ITSELF.SO I PUNCHED MY TV SCREEN AND NOW I NEED TO KNOW HOW TO FIX THE THE FLASHING AND SCREEN...

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2 Answers

Thank you very much for the info on clearing the codes. I have a question: what is the flyback? Is that the end of the wire that goes into the HVB that we replaced? When we removed the wires from the HVB, a few of the metal tips broke because we didn't know to push in before twisting and pulling it out. I'm sorry we don't know these terms and parts. We haven't done anything like this before. We were pretty brave to replace the HVB I think...We fixed the tips on the wires by making a new tip out of an end of a fuse, and soldered it. Could that cause this problem?

Posted on Jun 01, 2008

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  • Sony Master
  • 8,617 Answers

The +5 line is either shorted or overloaded on the A and B boards that what the 6 blink error code is indicating.

Posted on Jun 01, 2008

  • Sonny Berry
    Sonny Berry Jun 01, 2008

    I would guess that maybe the solder on the flyback may need to be retouched. The flyback feeds voltages to the CRT heaters and by turning the red crt up your actually increasing voltages to the CRT. I would check the solder on the flyback.

    Heres how you can access the onscreen error display. turn the set off then press in sequence on the remote/

    DISPLAY , Channel 5 , VOL – , POWER

    Then to clear the error code press CH.8 then enter and when your finished press power that leaves the error code display menu.


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I can help you to solve your Sony tv problem.
Is it Sony KP-51HW40 tv or any other model?
How many times red light start blinking after three seconds long pause?
Let me know to proceed, can you check voltages with multimeter in tv circuit board?
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