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Television won't power up

This television first started with the picture messing up, think that was to do with the cable connection on the back because I smacked it on the side and the picture straightened out and it was fine. Recently I went to turn the set on and it sounded like it was going to turn on and then it made another sound and would not power up from that point. I have worked on some televisions and installed fly back transformers, but that was long ago. I have tools, soldier iron and volt/ohm meter. I was thinking that I can open the set, discard the tube and this might have a broken connection to the cable but the power going out I suppose I could trace back from the power button. I am leery of discharging the set since I have not done this for so long. Can you instruct me as how I should do this and what to look for or test. Your help would be greatly appreciated

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The set has gone into protection overload status.

You must unplug the power cord for 3 or 4 hours and power it up again.

If the hard reset above does not bring it back to life it needs technical service. There are about 10 sections that would need to be checked to see where the overload conditions are causing the problem.

As a general rule this type of failure is severe and expensive. Typical costs of repair are always over $200 and most often closer to $400.

Common failures are main power supply, high voltage supply, deflection amplifiers and so on.

This is not a user or home remedy type repair. If you are lucky it may be something not so costly, but experience tells otherwise.

Hope this helps.

Good Luck
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Posted on Feb 02, 2008

  • Anonymous Feb 02, 2008

    A turnoff as you describe is generally caused from current overload which sends
    the set into protection mode.

    This is a very common occurrence.

    FIRST: Give it a hard reset. Unplug the tv for a couple of hours, then try it again.

    SECOND: Whack it good with your hand or fist. Doing so will often reactivate a bad joint,
    connector or cold solder.

    THIRD: It may need servicing if the above two remedies bring nothing to the for.

    The cause is often a failure in the power supply, high voltage or deflection amplifiers.
    It is never from the same cause as other sets. Cost of repair can be from $100 to $400,
    depending on the final diagnosis.

    Good Luck
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  • Anonymous Feb 02, 2008

    Good Luck
    Was this solution helpful? Show your Appreciation by rating it:



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