Sony KDL 52W5100 No Picture but sound

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  • kk325ic
    Member
    • Mar 2013
    • 11
    • USA

    #1

    Sony KDL 52W5100 No Picture but sound

    My Sony KDL-52W5100 quit working after 3 year's service. The sympton is: 1) No picture
    2) audio works 3) back light works

    I checked the fuse on T-Con board, it seems okay with 0.3 Ohm. I seriously suspect either the main board or the t-con board has problem.

    Consider $1500 for just 3 years, it seemsTV industry gain a pvery high margin profits. Not ready to dump this TV yet, if I can repair it. Any input is appreciated.

    Here are the pictures of the boards after removing the back cover of the TV




  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #2
    Re: Sony KDL 52W5100 No Picture but sound

    Do you get any DC voltage on that T-CON fuse?
    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

    • atef33
      New Member
      • Feb 2013
      • 8
      • italy

      #3
      Re: Sony KDL 52W5100 No Picture but sound

      i had the same problem with sony 40v 2000 i changed t-con board and the tv now is all right

      Comment

      • kk325ic
        Member
        • Mar 2013
        • 11
        • USA

        #4
        Re: Sony KDL 52W5100 No Picture but sound

        Yes, I measure it. One side is 12.4v and the other side is 12.3v. Besides the T-Con fuse, what could be potential pitfalls?

        Originally posted by budm
        Do you get any DC voltage on that T-CON fuse?

        Comment

        • kk325ic
          Member
          • Mar 2013
          • 11
          • USA

          #5
          Re: Sony KDL 52W5100 No Picture but sound

          I would like to get a t-con board to try it out. It seems not easy to find one for my model.

          Called Sony and they don't sell it.


          Originally posted by atef33
          i had the same problem with sony 40v 2000 i changed t-con board and the tv now is all right

          Comment

          • atef33
            New Member
            • Feb 2013
            • 8
            • italy

            #6
            Re: Sony KDL 52W5100 No Picture but sound

            look inside this site certainly you find it :FlatTVParts.co.uk

            Comment

            • kk325ic
              Member
              • Mar 2013
              • 11
              • USA

              #7
              Re: Sony KDL 52W5100 No Picture but sound

              I am a newbie on this site. Please help me locate the parts. I believe the parts number is 52NU_MB3C6L v0.7

              thanks in advance.

              Originally posted by atef33
              look inside this site certainly you find it :FlatTVParts.co.uk

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #8
                Re: Sony KDL 52W5100 No Picture but sound

                You need to match the P/N of the printed circuit board assembly number (not the blank circuit bord number), the PCBA number is usually printed on the bard code.
                Check out www.shopjimmy.com
                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

                • kk325ic
                  Member
                  • Mar 2013
                  • 11
                  • USA

                  #9
                  Re: Sony KDL 52W5100 No Picture but sound

                  how likely the main board could be wrong? I am thinking where should I start - replacing t-con board or the main board?

                  Originally posted by budm
                  You need to match the P/N of the printed circuit board assembly number (not the blank circuit bord number), the PCBA number is usually printed on the bard code.
                  Check out www.shopjimmy.com

                  Comment

                  • budm
                    Badcaps Legend
                    • Feb 2010
                    • 40746
                    • USA

                    #10
                    Re: Sony KDL 52W5100 No Picture but sound

                    I lean toward bad T-CON, it is cheaper than the main board most of the time. Make sure to use the silicone heat transfer pads that are on the old IC and on the cover.
                    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

                    • kk325ic
                      Member
                      • Mar 2013
                      • 11
                      • USA

                      #11
                      Re: Sony KDL 52W5100 No Picture but sound

                      Let me order an t-con board ...

                      Originally posted by budm
                      I lean toward bad T-CON, it is cheaper than the main board most of the time. Make sure to use the silicone heat transfer pads that are on the old IC and on the cover.

                      Comment

                      • kk325ic
                        Member
                        • Mar 2013
                        • 11
                        • USA

                        #12
                        Re: Sony KDL 52W5100 No Picture but sound

                        thanks for everybody's help. The new T-Con board fixed the problem.

                        Comment

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