Question about Samsung PN42A450 Plasma TV

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Pn50a450p turns off and on 1 to 10 times per day

Pn50a450p turns off then imediatly back on, 0 to 10 times per day, no corolation with viewing time or heat.

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Hi


Thanks for using FixYa.It seems to be an issue with the X, Y-main board however; control board should also be checked. As the sound is working fine so it means that power supply unit is functioning properly. Check for any bad/bulged capacitors on these boards. These boards are located on the right side of the unit and to check them you’ll have to open the back of the unit and then blow the dust off with a blow dryer. Once you have opened the back also check for any blown/bulged capacitors.All this is only recommended if you have electrical expertise & know how to solder/re-solder components as these units contain high voltages even when in off position. Please do accept the solution if the issue is resolved or post a comment for further assistance.


Thanks
Rylee

Posted on Jul 08, 2010

  • 8 more comments 
  • jimhjimh Jul 08, 2010

    Hi Rylee,

    Thanks for helping. I don't see any bulged caps,

    Jim

  • Rylee Smith
    Rylee Smith Jul 08, 2010

    Jim,




    Thanks for your reply. If you are unable to see any bulge caps. then try to clean the boards inside and then plug the unit back in to check if everything is working fine.

  • jimhjimh Jul 08, 2010

    I will try that but it may be a day or two before it shuts off again, if it's not fixed. The boards are almost dust free

    Thank you, Jim

  • Rylee Smith
    Rylee Smith Jul 08, 2010

    Then there should be a capacitor thats going bad or some other component on the power supply board. Please do accept the solution if the issue is resolved or post a comment for further assistance.


    Thanks
    Rylee

  • jimhjimh Jul 08, 2010

    Hi Rylee,

    I checked All the caps again and they all look fine. I don't mind replacing a whole board if I could determine wich one.

    Jim

  • Rylee Smith
    Rylee Smith Jul 08, 2010

    You can plug it in different outlet so that we can know what has gone bad.

  • jimhjimh Jul 08, 2010

    Rylee,

    are you suggeting the outlet is the cause?

    Jim

  • Rylee Smith
    Rylee Smith Jul 08, 2010

    It might be and I am suggesting to check it

  • jimhjimh Jul 08, 2010

    Rylee,

    OK I'll put it back together and let you know when something hapens or doesn't hapen.

    Jim

  • Rylee Smith
    Rylee Smith Jul 08, 2010

    OK Jim, please do accept the solution if the issue is resolved or post a comment for further assistance.


    Thanks
    Rylee

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