60pb660v circuit

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  • thuss
    Badcaps Veteran
    • Jul 2012
    • 317
    • uk

    #1

    60pb660v circuit

    Hi

    My mate finally decided to change an ic on my 60pb660v ysus board. Unfortunately one of the pads in the process has been removed .

    I was wondering can anyone tell me where on the attached photo the ic highlighted in the yellow boxes- leg numbered three connects to even the solder below the pad has been removed?

    thanks in advance.
    Attached Files
    Last edited by thuss; 08-08-2019, 06:02 PM.
  • tvtimmy
    Badcaps Legend
    • Mar 2015
    • 1160
    • usa

    #2
    Re: 60pb660v circuit

    That pad is not used. Look up the datasheet for that ic and it will probably say n.c.(no connection).

    Comment

    • CapLeaker
      Leaking Member
      • Dec 2014
      • 8119
      • Canada

      #3
      Re: 60pb660v circuit

      just run a thin piece of wire from the through hole to the lC's leg. Put some conformal coating over it and be done with it.

      Comment

      • thuss
        Badcaps Veteran
        • Jul 2012
        • 317
        • uk

        #4
        Re: 60pb660v circuit

        Originally posted by CapLeaker
        just run a thin piece of wire from the through hole to the lC's leg. Put some conformal coating over it and be done with it.
        Sorry I don't know what you mean by the through hole- can't I just leave it floating in the air

        tvtimmy you are right it is n.c - not connected

        thanks to you both for the advice
        Last edited by thuss; 08-08-2019, 07:35 PM.

        Comment

        • CapLeaker
          Leaking Member
          • Dec 2014
          • 8119
          • Canada

          #5
          Re: 60pb660v circuit

          look at the second picture. Isn't the leg in question (pin 3) having a trace to a small solder point? Look where it goes on the other side of the PCB.
          Last edited by CapLeaker; 08-09-2019, 12:25 PM.

          Comment

          • thuss
            Badcaps Veteran
            • Jul 2012
            • 317
            • uk

            #6
            Re: 60pb660v circuit

            Originally posted by CapLeaker
            look at the second picture. Isn't the leg in question (pin 3) having a trace to a small solder point? Look where it goes on the other side of the PCB.
            theres a jumper on the other side which leg 4 is connected to but nothing else- I think its time forthis tv to to a shop or into the bin - will try one last thread tho thanks
            Last edited by thuss; 08-09-2019, 04:24 PM.

            Comment

            • CapLeaker
              Leaking Member
              • Dec 2014
              • 8119
              • Canada

              #7
              Re: 60pb660v circuit

              what is printed on the IC?

              Comment

              • thuss
                Badcaps Veteran
                • Jul 2012
                • 317
                • uk

                #8
                Re: 60pb660v circuit

                Originally posted by CapLeaker
                what is printed on the IC?
                The original ic was 200D6 which I replaced with an ic with part number 200D1.
                The full name is NCP1200D60.
                Last edited by thuss; 08-12-2019, 05:12 PM.

                Comment

                • CapLeaker
                  Leaking Member
                  • Dec 2014
                  • 8119
                  • Canada

                  #9
                  Re: 60pb660v circuit

                  So pin 3 is the current sense pin. You better hook that one up. Pin 7 has no connection. You can leave that one off.

                  Comment

                  • thuss
                    Badcaps Veteran
                    • Jul 2012
                    • 317
                    • uk

                    #10
                    Re: 60pb660v circuit

                    Sorry my mistake- I meant pin 7 (n.c not connected) - thank you ( my numbering on the attached photo didn't the data sheet sorry)

                    Once again thanks for the help I really appreciate it

                    Comment

                    • R_J
                      Badcaps Legend
                      • Jun 2012
                      • 9535
                      • Canada

                      #11
                      Re: 60pb660v circuit

                      The ic's pin#1 are marked with a ►
                      Last edited by R_J; 08-12-2019, 09:37 PM.

                      Comment

                      • thuss
                        Badcaps Veteran
                        • Jul 2012
                        • 317
                        • uk

                        #12
                        Re: 60pb660v circuit

                        The ncp1200D60 chips that my mate got haven't got any arrows/dots on, he assumed that the solid white line (read in conjunction with the writing) indicated where pin 1 was

                        Comment

                        • R_J
                          Badcaps Legend
                          • Jun 2012
                          • 9535
                          • Canada

                          #13
                          Re: 60pb660v circuit

                          The mark ► I refered to is on the pc board. The soic-8 ic should have a small dot for pin 1 but will also have the pin1 edge slightly tapered (see pdf)

                          Comment

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