Samsung H6400 random restarts or black screen

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  • nubinator
    Member
    • Jan 2012
    • 34
    #1

    Samsung H6400 random restarts or black screen

    TV works as normal for a few seconds then either get black screen or restart and will continue doing this randomly. If it goes to black screen subtitles and sound keep working.
    In HDMI will get the random reboots but takes longer. With TCON disconnected it still randomly restarts. is this main board issue?
    Tags: None
    • dskall
      Badcaps Legend
      • Oct 2016
      • 2905
      • usa
      #2
      Re: Samsung H6400 random restarts or black screen

      Need to check you power board voltages.
      I assume no responsibility for any stupid suggestions I might post.

        Comment

        • nomoresonys
          Badcaps Legend
          • Jan 2013
          • 12123
          • U.S.
          #3
          Re: Samsung H6400 random restarts or black screen

          samsung, unplug cable from powerboard to mainboard, leave off, plug power cord in, see if backlights come on and stay on, if they do, then backlights and powerboard are ok.

            Comment

            • nubinator
              Member
              • Jan 2012
              • 34
              #4
              Re: Samsung H6400 random restarts or black screen

              Yes it is main board. Menus and sound work its just video that goes out doesnt matter what source. Where on the main board would the video processing part be? I might just look for bad solder joints.
              Attached Files

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                • dskall
                  Badcaps Legend
                  • Oct 2016
                  • 2905
                  • usa
                  #5
                  Re: Samsung H6400 random restarts or black screen

                  Heat up main processor and then try and turn on tv and see if you have picture.
                  I assume no responsibility for any stupid suggestions I might post.

                    Comment

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