Sony KDL-46NX700 Led does not stay on

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  • PowerAmpFreak
    Badcaps Veteran
    • Feb 2010
    • 977
    • Sweden
    #1

    Sony KDL-46NX700 Led does not stay on

    Hi all.
    This Sony led-tv model 46NX700 does not stay on more than 30 seconds at a time. It shows a good picture and sound during this period.
    Then exactly after 30 seconds it shuts down and re-starts.
    Front led does not flash either.
    Mostly working on Samsung's, would need help with this dude.
    Tags: None
    • tibimakai
      Badcaps Legend
      • Jan 2012
      • 3680
      • USA
      #2
      Re: Sony KDL-46NX700 Led does not stay on

      I have repaired a similar one, the 720 model and it was the LED driver board(one driver IC).
      There are some test points on that board, you can see if there are any differences between them.
      Mine, didn't reboot if I remember correctly.

        Comment

        • PowerAmpFreak
          Badcaps Veteran
          • Feb 2010
          • 977
          • Sweden
          #3
          Re: Sony KDL-46NX700 Led does not stay on

          Do you mean the PSU board, containing the LED driver?
          See attached...
          Attached Files

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA
              #4
              Re: Sony KDL-46NX700 Led does not stay on

              It looks like your power supply board also contains LED driver circuits.
              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

                • djluis
                  Member
                  • Apr 2011
                  • 12
                  #5
                  Re: Sony KDL-46NX700 Led does not stay on

                  need schematic for aps262 power supply used on this model.

                    Comment

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