Apple A1261 820-2262-A no power

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  • Pragmatiko
    Badcaps Veteran
    • Jul 2013
    • 468
    • IT

    #1

    Apple A1261 820-2262-A no power

    Hello,
    that Macbook is completly dead.
    I have 3,3V on power button but when i press it the laptop wont turn on.
    I tried to put to ground with twizeer pad On 3,3V but still nothing.

    Could be a bios issue?

    Someone have a bios dump?

    Regards
  • Pragmatiko
    Badcaps Veteran
    • Jul 2013
    • 468
    • IT

    #2
    Re: Apple A1261 820-2262-A no power

    Have 3,3V on power button and also have 3,3v and 5v on L7360 and L7320.

    Have flashed bios with new one but still not turn on.

    Any suggestment?
    Attached Files

    Comment

    • farooquepm
      Member
      • May 2016
      • 10
      • india

      #3
      Re: Apple A1261 820-2262-A no power

      Originally posted by pragmatiko
      have 3,3v on power button and also have 3,3v and 5v on l7360 and l7320.

      Have flashed bios with new one but still not turn on.

      Any suggestment?

      sir you need check 5.v and 3.v regulater mosfet ans primary ic

      Comment

      • Pragmatiko
        Badcaps Veteran
        • Jul 2013
        • 468
        • IT

        #4
        Re: Apple A1261 820-2262-A no power

        Originally posted by farooquepm
        sir you need check 5.v and 3.v regulater mosfet ans primary ic
        Hello, 5 and 3 volt are ok.

        Comment

        • Pragmatiko
          Badcaps Veteran
          • Jul 2013
          • 468
          • IT

          #5
          Re: Apple A1261 820-2262-A no power

          someone can attach board view?

          Comment

          • dfbaaaa
            New Member
            • Jan 2015
            • 7
            • Argentina

            #6
            Re: Apple A1261 820-2262-A no power

            Originally posted by Pragmatiko
            someone can attach board view?
            There you go!
            Attached Files

            Comment

            • ktmmotocross
              Boardkiller
              • Feb 2014
              • 3578
              • slovakia

              #7
              Re: Apple A1261 820-2262-A no power

              did u have 3.425V from "G3HOT"? U7800



              see this guy he is great in macbooks
              https://www.youtube.com/user/rossmanngroup

              Comment

              • ohuhohuhoh
                New Member
                • Jul 2016
                • 1
                • Australia

                #8
                Re: Apple A1261 820-2262-A no power

                Thanks OP
                I have repair the Graphic Card and now there is no wifi and so sound. The boardview and schematic is very useful for me to check the PPVIN for those two IO

                Comment

                • tipaaetaa
                  New Member
                  • Sep 2019
                  • 1
                  • Russia

                  #9
                  Re: Apple A1261 820-2262-A no power

                  Thank! Now I signed up for this guy, he is really cool.

                  Comment

                  • Geddy
                    New Member
                    • Oct 2021
                    • 1
                    • Mex

                    #10
                    Re: Apple A1261 820-2262-A no power

                    Thanx

                    Comment

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