Question about Sprint Hitachi P300 Cellular Phone

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TV SHUTS OFF RANDONLY

I HAVE A HITACHI 57 INCH PROJECTION TV MODEL 57XWX20B AND JUST RECENTLY THE TV WILL RANDOMLY SHUT OFF AND I CANNOT TURN IT BACK ON UNTIL I UNPLUG THE TV AND PLUG IT BACK IN, I WILL HAVE TO DO THIS SEVERAL TIMES IN A ROW AND SOMETIMES WILL HAVE TO LET IT SIT FOR AWILE, THEN IT WILL WORK AGAIN FOR AWHILE SOMETIMES DAYS THEN IT WILL REOCCUR, ANY SUGGESTIONS?

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  • Master
  • 6,966 Answers

Hi and welcome to FixYa,

Initially, pls determine if all the 5 diagnostic LED's as well as the front panel LED are lit and not flashing.

  • If yes, then pls check the inside of the TV with special attention to disconnected or loose connectors/plugs. You may want to start on the vertical yoke of any of the CRTs.
  • If no, pls post back the LED blink/lit codes.
Good luck and Thank you for using FixYa. Happy Holidays.

Posted on Dec 09, 2008

  • Louie  Role
    Louie Role Dec 12, 2008

    Hi again,



    Any updates or developments so far?



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  • Master
  • 1,550 Answers

The protection circuit is cutting in and out and it is really just a high current detection system.
This is very typical of loose connections and cold solder joints which are easily diagnosed by giving the set a whack with your hand in a few strategic places.
Tops would be dried out thermal compound on the VOT and HOT (Vertical and Horizontal Output Transistors)

Posted on Dec 09, 2008

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  • Contributor
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This sounds like a power source problem...it may be your flyback or your transformer!

Posted on Dec 09, 2008

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  • Master
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Is this a phone or a TV as your post doen't give any definate description

regards

Posted on Dec 09, 2008

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6ya6ya
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