Samsun LN-T4661fx Main Board or t-con?

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  • topfli8979
    Badcaps Veteran
    • Oct 2012
    • 311
    • USA

    #1

    Samsun LN-T4661fx Main Board or t-con?

    Currently working on a Samsung 46" Lcd LN-T4661fx with no picture. Tv powers on,chimes, back light primes and stays on. I am getting no picture,menu,nothing. Just glowing screen. All my voltages are correct on ps. I cannot access service menu, info-menu-mute-power. Will t-con failure leave screen completely blank?
  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #2
    Re: Samsun LN-T4661fx Main Board or t-con?

    Check the fuse on the T-con.
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

    Comment

    • topfli8979
      Badcaps Veteran
      • Oct 2012
      • 311
      • USA

      #3
      Re: Samsun LN-T4661fx Main Board or t-con?

      Im not finding a dedicated fuse
      Attached Files

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #4
        Re: Samsun LN-T4661fx Main Board or t-con?

        Bottom left of LVDS input. Small thing, next to the three brown caps. Probably marked "P". Very common failure on these boards.
        Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
        For service manual, schematic, boardview (board view), datasheet, cad - use our search.

        Comment

        • topfli8979
          Badcaps Veteran
          • Oct 2012
          • 311
          • USA

          #5
          Re: Samsun LN-T4661fx Main Board or t-con?

          I found one labeled "T" directly above lvds input next to 3 caps. It is short/ground.

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #6
            Re: Samsun LN-T4661fx Main Board or t-con?

            What voltage do you measure either end? Red on one end of fuse, black on chassis, repeat for other end of fuse.
            Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
            For service manual, schematic, boardview (board view), datasheet, cad - use our search.

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #7
              Re: Samsun LN-T4661fx Main Board or t-con?

              That is the one, you use your meter in OHM mode and check the resistance of that fuse, each probe on each end of the fuse, no power to the TV of course. It should show same reading as when you touch the two probes of the meter together.
              http://www.shopjimmy.com/media/catal...01308a-top.jpg
              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

              • topfli8979
                Badcaps Veteran
                • Oct 2012
                • 311
                • USA

                #8
                Re: Samsun LN-T4661fx Main Board or t-con?

                12.97 v, reads 0.00 on ohms, same as probes touching.

                Comment

                • topfli8979
                  Badcaps Veteran
                  • Oct 2012
                  • 311
                  • USA

                  #9
                  Re: Samsung LN-T4661fx Main Board or t-con?

                  Shorted fet on the tcon, tv is working now.

                  Comment

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