Samsung PN51E6500EF Replaced logic and XYM board, no love...

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  • oswaldt
    Member
    • Dec 2015
    • 17
    • USA
    #1

    Samsung PN51E6500EF Replaced logic and XYM board, no love...

    This TV has me stumped. Initially it just started powering on and off constantly. I figured (had some issues previously and most of the HDMI ports had failed) that was the logic board (BN94-04644C/97-05181C) and replaced it. That fixed the power on/off problem. The green LED blinks once per second, etc.

    Unfortunately the display came up all distorted and strange. After a second or two it would fade to almost black to the point where the setup menu (from the new logic board) wasn't legible. After a good bit of reading it appeared that was caused by a bad X sustain. This TV seems to have one integrated board for X and Y so I replaced it (51EHF_XYM).

    That board went in well but the situation is basically the same. The display stays a little brighter for a little longer, but the menu's still aren't legible. I've attached multiple pictures of the boards and what the display looks like. That's my computer desktop that's supposed to be on the display BTW.

    Initially I did search for bad capacitors and any obvious problems. None found. The power supply tests out perfect from it's two test points. I also tested the XYM test points (two, vscan and Ve I think). I had to slightly adjust the vscan to match the sticker on the TV but otherwise everything was perfect.

    Help, I'm stumped...
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    • ReeceyBurger123
      Never Give Up !
      • May 2014
      • 7325
      • Britain
      #2
      Re: Samsung PN51E6500EF Replaced logic and XYM board, no love...

      Looks like mainboard, have you run the test patterns ?
      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

        • oswaldt
          Member
          • Dec 2015
          • 17
          • USA
          #3
          Re: Samsung PN51E6500EF Replaced logic and XYM board, no love...

          I have not. Any advice on how to do that? I've read a couple of different things and not sure which one to proceed with.

            Comment

            • oswaldt
              Member
              • Dec 2015
              • 17
              • USA
              #4
              Re: Samsung PN51E6500EF Replaced logic and XYM board, no love...

              Was able to figure it out today and the test patterns look perfect. Next step is to find another main board right?

                Comment

                • ReeceyBurger123
                  Never Give Up !
                  • May 2014
                  • 7325
                  • Britain
                  #5
                  Re: Samsung PN51E6500EF Replaced logic and XYM board, no love...

                  Hi sorry, yes mainboard is at fault then.
                  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

                    • oswaldt
                      Member
                      • Dec 2015
                      • 17
                      • USA
                      #6
                      Re: Samsung PN51E6500EF Replaced logic and XYM board, no love...

                      Thanks for all the help. Was able to return the bad main board and get another. Popped that in this evening, fired it up, and was watching TV soon after.

                      Wife is a happy camper. :-)

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