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I have a Sanyo hln567w. When it is turned on, after a few minutes the screen freezes up, goes black, and the only way to turn the TV off is to unplug it. The green light at the bottom flashes. I have had the bulb and balyst replaced, it did not help.

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  • clintt Sep 03, 2008

    The problem still happens even after replacing the ballyst. The tv will turn on and has a picture. After a few minutes, it will go black and I have to unplug it in order to get it to turn off. The button on the side and the remote will not turn it off.

  • clintt Sep 04, 2008

    thanks

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  • 19,396 Answers

If you had picture, there was no need to replace lamp, that is an expensive part.
Regarding ballast , before replacing you need to test voltages on it, this is an hazardous procedure that must be performed by a technician.
The problem it is some faulty component on one of the internal pcbs, can be a faulty IC , a capacitor or any of the several thousends components inside your TV.
Often, for example you get same problem from the high voltage board powering the bulb.
You need to have a repairman diagnosing the problem before buying more parts.

Posted on Sep 04, 2008

  • Ginko
    Ginko Sep 04, 2008

    I forgot to mention that the TV is turning itself off because the chip controlling your tv activate the internal safety switch after detecting an error (overvoltage , shorts, faulty component etc.).
    The safety device will put TV on standby and stop normal TV operations, that is what is happening to your TV.


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This is a problem that still occurs after you replaced the balast? does the picture come on at all? or after a few minute of clear picture it goes blank.

Posted on Sep 02, 2008

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