Samsung 69" LED no power issue

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  • Wellington1
    Member
    • Sep 2017
    • 43
    • Canada

    #1

    Samsung 69" LED no power issue

    I posted earlier regarding my Samsung 60DUN6420UF turning off after about 1 minute, during which the panel itself and led lighting are fine, with no devices connected of course there is a " no signal detected" on the screen along with another "no hdmi2 " icon.


    Interestingly the tv turns itself on automatically once plugged in to an ac outlet after perhaps 15 = 20 seconds. After about 30 seconds the screen will evenly fluctuate, or more precisely the edge lit leds and then the on screen display will begin to bounce, some lines appear all over and then it quickly shuts down, doing the relay cycling or clicking every 20 - 30 seconds on the PS board.


    I did notice after unplugging the tv for 15 minutes and then plugging it in again that when it self powered there were various unevenly spaced horizontal lines or bars of different solid colors - blue, red or green that also stated bouncing and again it turned off after perhaps a minute. There was no OSD this time, just the lines, including a blue one along the top edge that was had an even square block pattern.


    Normally there is no front power indicator but when I unplugged the tv the second time the relay began clicking twice, it did this three times in succession with maybe 10 seconds between each "cycle" and this time I noticed that the front power indicator was flashing red twice at the same time as the relay. There was no on screen display present.


    I know the panel and back lit leds are good but trying to figure out the function of the pins on the connector to the main board for voltages. Not much information on that so far though I do see values printed on the edge of the PS board. The Samsung PS board part # is BN44-00425A.


    Does any of this sound familiar to anyone here? I have yet to test anything, though no real experience. have a digital multi meter. Should read 60" in title - typo error!
    Last edited by Wellington1; 10-14-2017, 06:48 PM.
  • dskall
    Badcaps Legend
    • Oct 2016
    • 2905
    • usa

    #2
    Re: Samsung 69" LED no power issue

    Need good clear straight on pictures of whole back of tv with cover off and each board.
    I assume no responsibility for any stupid suggestions I might post.

    Comment

    • CapLeaker
      Leaking Member
      • Dec 2014
      • 7969
      • Canada

      #3
      Re: Samsung 69" LED no power issue

      also recheck that model number from the TV

      Comment

      • Wellington1
        Member
        • Sep 2017
        • 43
        • Canada

        #4
        Re: Samsung 69" LED no power issue

        I appreciate the help - it is a UN60D6420UFXZC ( XZA IN U.S. ).


        Maybe check that post as I just replied to some advice from earlier.

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA

          #5
          Re: Samsung 69" LED no power issue

          Should stick to the original thread instead of making this new thread, it will cause less confusion.
          https://www.badcaps.net/forum/showthread.php?t=64411
          Never stop learning
          Basic LCD TV and Monitor troubleshooting guides.
          http://www.badcaps.net/forum/showthr...956#post305956

          Voltage Regulator (LDO) testing:
          http://www.badcaps.net/forum/showthr...999#post300999

          Inverter testing using old CFL:
          http://www.badcaps.net/forum/showthr...er+testing+cfl

          Tear down pictures : Hit the ">" Show Albums and stories" on the left side
          http://s807.photobucket.com/user/budm/library/

          TV Factory reset codes listing:
          http://www.badcaps.net/forum/showthread.php?t=24809

          Comment

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