PS60E550 Intermittent Vs On Control Board Issue ?

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  • ReeceyBurger123
    Never Give Up !
    • May 2014
    • 7325
    • Britain

    #1

    PS60E550 Intermittent Vs On Control Board Issue ?

    Hi badcappers, have the 60" Samsung Plasma here which is showing an image intermittently. When the image works its fine with no distortion however it works intermittently but they set has sound. I took the Y and Xmain out and resoldered a few suspicious joints but the issue is not solved.

    Uppon checking out the Vs and Va rails they seem to come up one time then not the next. I found that the Psu was not being told to turn them rails on as the Vson signal was coming up at 3.3v (working) then falling to 0v (not working). The Vson is generated on the control board, so do you lot think this is the fault ?

    I sure it is but just want some others to confirm as the owner does not want to spend too much on the Tv. Cheers
    Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

    https://www.facebook.com/Telford-Tel...7894576335359/
  • dick_barton
    Badcaps Legend
    • Aug 2015
    • 6642
    • Wales

    #2
    Re: PS60E550 Intermittent Vs On Control Board Issue ?

    Does an externally applied voltage for PS_On bring up Vs and Va each and every time and if so then I would think you are correct.

    The only other thought is if PS_On is buffered from the main processor PS_On via a mosfet or transistor.
    Willing to help but I'm no expert.

    Comment

    • ReeceyBurger123
      Never Give Up !
      • May 2014
      • 7325
      • Britain

      #3
      Re: PS60E550 Intermittent Vs On Control Board Issue ?

      Cheers, looking like it had this before on a Lg.
      Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

      https://www.facebook.com/Telford-Tel...7894576335359/

      Comment

      • ReeceyBurger123
        Never Give Up !
        • May 2014
        • 7325
        • Britain

        #4
        Re: PS60E550 Intermittent Vs On Control Board Issue ?

        Well chaps the control board is not at fault. Its the Ymain here I was able to find the component causing the issue thanks to the one and only Tom66 mentioning something to me. There is an Ic on the Ymain U5014 which is a 3br0665jz which I think controls something for the Vsus feedback is faulty.

        This as I mentioned in the video (will be uploaded after repair) the Ic has gotten very hot and is breaking down internally, if I freeze spray it the Tv works fine but if I heat it the Tv wont sustain an image. I have the Ic on order and will keep you updated. Here is an image of the Ymain.
        Attached Files
        Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

        https://www.facebook.com/Telford-Tel...7894576335359/

        Comment

        • ReeceyBurger123
          Never Give Up !
          • May 2014
          • 7325
          • Britain

          #5
          Re: PS60E550 Intermittent Vs On Control Board Issue ?

          I also have some mini Vga ram heatsinks on order which I will out on the Ic to help it cool. Close up image of the Ic:
          Attached Files
          Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

          https://www.facebook.com/Telford-Tel...7894576335359/

          Comment

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