Kdl75w850c

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  • charlie555
    Senior Member
    • Feb 2018
    • 76
    • usa

    #1

    Kdl75w850c

    6 blinking lights, SONY logo comes up for a sec and then off. I checked all diodes on power supply and found D6201 and D6202 which are side by side with continuity.
    Attached Files
  • mmartell
    Badcaps Legend
    • Oct 2013
    • 3189
    • Canada

    #2
    Re: Kdl75w850c

    I have the 65" version of this set. It had 6 blinks and had the same behaviour as yours and it was a bad led in one of the strips.

    As for your they probably shouldn't show shorted. Lift one leg of each and test again.

    Comment

    • neilc6
      Badcaps Legend
      • Nov 2015
      • 1550
      • Canada

      #3
      Re: Kdl75w850c

      I googled for you and this post says 6 blinks is backlight.

      https://us.community.sony.com/s/ques...language=en_US

      Comment

      • budm
        Badcaps Legend
        • Feb 2010
        • 40746
        • USA

        #4
        Re: Kdl75w850c

        Originally posted by charlie555
        6 blinking lights, SONY logo comes up for a sec and then off. I checked all diodes on power supply and found D6201 and D6202 which are side by side with continuity.
        Those Diodes are for the Standby power supply (you can see STBY_FB printed next to the OPTO PH6301) and that power supply is OK otherwise you will not get any indicator lights to show error code since the main board requires that Standby power supply to be working.
        If you really want to test them, lift one leg off the board and retest, BTW, they are connected in parallel.
        If you check the DCV between Cathode and chassis ground, you should see either 3.3V or 5V which are typical Standby Voltage for TV.
        Last edited by budm; 08-17-2020, 08:02 PM.
        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

        • charlie555
          Senior Member
          • Feb 2018
          • 76
          • usa

          #5
          Re: Kdl75w850c

          Thank you all for your inputs

          Comment

          • charlie555
            Senior Member
            • Feb 2018
            • 76
            • usa

            #6
            Re: Kdl75w850c

            so I lifted one of the legs to the diode and still getting tone. bad?

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #7
              Re: Kdl75w850c

              Originally posted by charlie555
              so I lifted one of the legs to the diode and still getting tone. bad?
              Getting tone on the lifted Diode?
              What mode did you set your meter too?
              What reading does it show on the meter?
              Did you check the Voltage as I suggested?
              Last edited by budm; 08-19-2020, 06:13 PM.
              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

              • charlie555
                Senior Member
                • Feb 2018
                • 76
                • usa

                #8
                Re: Kdl75w850c

                lol sorry, I was watching TOP GUN, I set my meter to diode tester. I lifted the side with no grey bar and still got continuity. will check today

                Comment

                • budm
                  Badcaps Legend
                  • Feb 2010
                  • 40746
                  • USA

                  #9
                  Re: Kdl75w850c

                  The end side with bar is Cathode, another end is Anode, meter should only beep when Black probe on Cathode Red probe on Anode, the meter will display the Forward Voltage of the Diode, when you reverse the leads then you should see 'OL'.
                  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

                  • charlie555
                    Senior Member
                    • Feb 2018
                    • 76
                    • usa

                    #10
                    Re: Kdl75w850c

                    ok ty

                    Comment

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