a1278 board 820-2936-b doesn't charge

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  • dellxps15
    Badcaps Legend
    • Feb 2014
    • 1588
    • italy

    #21
    Re: a1278 board 820-2936-b doesn't charge

    post voltage on battery connector pins.

    Comment

    • angel-boy
      Badcaps Veteran
      • Jan 2013
      • 550
      • Romania

      #22
      Re: a1278 board 820-2936-b doesn't charge

      measure between

      pin 1, 2, 3 ( positive ) with pin 4,5 ( negative ) = 11.80v
      pin 1,2,3 ( positive ) with pin 6 ( negative ) = 8.60
      pin 1,2,3, ( positive ) with pin 7,8,9 ( negative ) = 11.80v

      i hope you understand me
      Attached Files

      Comment

      • angel-boy
        Badcaps Veteran
        • Jan 2013
        • 550
        • Romania

        #23
        Re: a1278 board 820-2936-b doesn't charge

        don`t forget to help me , realy need to fix this board.

        Comment

        • dellxps15
          Badcaps Legend
          • Feb 2014
          • 1588
          • italy

          #24
          Re: a1278 board 820-2936-b doesn't charge

          these are without battery? (strange voltage), now post voltage with battery and power supply and if it was with battery, now post voltage with only power supply.

          Comment

          • angel-boy
            Badcaps Veteran
            • Jan 2013
            • 550
            • Romania

            #25
            Re: a1278 board 820-2936-b doesn't charge

            ok , see photo , witing for help

            voltaje with battery and no charger, is the same with battery and charger.
            Attached Files
            Last edited by angel-boy; 01-28-2016, 02:09 AM.

            Comment

            • angel-boy
              Badcaps Veteran
              • Jan 2013
              • 550
              • Romania

              #26
              Re: a1278 board 820-2936-b doesn't charge

              please. i`m in a hurry to fix this

              Comment

              • angel-boy
                Badcaps Veteran
                • Jan 2013
                • 550
                • Romania

                #27
                Re: a1278 board 820-2936-b doesn't charge

                Originally posted by angel-boy
                please. i`m in a hurry to fix this

                please

                Comment

                • angel-boy
                  Badcaps Veteran
                  • Jan 2013
                  • 550
                  • Romania

                  #28
                  Re: a1278 board 820-2936-b doesn't charge

                  come one , realy cannot help me ?

                  Comment

                  • skynet85
                    Senior Member
                    • Jul 2015
                    • 124
                    • Georgia

                    #29
                    Re: a1278 board 820-2936-b doesn't charge

                    Hello , anyone else has solved this problem with this board

                    Comment

                    • twitchferrett
                      New Member
                      • Nov 2014
                      • 2
                      • USA

                      #30
                      Re: a1278 board 820-2936-b doesn't charge

                      Please provide password?

                      Comment

                      • Deluccia
                        Member
                        • Aug 2017
                        • 46
                        • uk

                        #31
                        Re: a1278 board 820-2936-b doesn't charge

                        Can someone please please help me out with the .BRD board view file for the 820-2936-A as the .RAR file will not open for some reason.. thank you

                        Comment

                        • piernov
                          Super Moderator
                          • Jan 2016
                          • 4435
                          • France

                          #32
                          Re: a1278 board 820-2936-b doesn't charge

                          The rar archive works fine. Try using PeaZip or 7-Zip on Windows, or unrar on Linux for example.
                          OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                          Comment

                          • macfix GT
                            New Member
                            • Aug 2019
                            • 2
                            • Guatemala

                            #33
                            Re: a1278 board 820-2936-b doesn't charge

                            any solution for this issue?

                            Comment

                            • piernov
                              Super Moderator
                              • Jan 2016
                              • 4435
                              • France

                              #34
                              Re: a1278 board 820-2936-b doesn't charge

                              Open a new thread to describe your specific issue in as much details as possible.
                              OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                              Comment

                              • fred77
                                New Member
                                • Jan 2017
                                • 2
                                • PARIS

                                #35
                                Re: a1278 board 820-2936-b doesn't charge

                                Good morning all,

                                I just looked at all the posts but I haven't found the solution to my problem yet.
                                I have a 2011 MBP with a board of 820-2936B
                                It works well except for the battery charge and the charge indicator green light on the side of the MBP.
                                The problem is the battery does not charge and the green charge level indicators do not light up.
                                When the macsafe is plugged in, the green LED lights up and turns red during pends 4s then it goes back to green with or without battery.
                                I replaced ISL6259 but nothing always changed the same failure.
                                I checked the resistance R5280 input and output = 3,468V
                                I checked the resistance R5281 input and output = 3,468V
                                I checked the resistance R7051 input and output = 12.4V
                                I checked the resistance R7052 input and output = 12.4V
                                I measured at Q7055 terminal 1,2,3 = 12,4V
                                terminal 4 = 12.37V?
                                terminal 5 = 5v which drops to 0V?
                                By testing in diode mode on SMC_BSA_SDA = 0.492 ohms
                                and SMC_BSA_SCL = 0.480 ohms
                                on CHGR_BGATE = 12.37V instead of 5V?

                                Does anyone have a solution to my problem thanking you
                                thank you

                                Comment

                                • Yal MicroElectronica
                                  New Member
                                  • Oct 2020
                                  • 3
                                  • Honduras

                                  #36
                                  Re: a1278 board 820-2936-b doesn't charge

                                  Originally posted by atsio
                                  Try this
                                  gracias

                                  Comment

                                  • irshadA
                                    New Member
                                    • Aug 2020
                                    • 3
                                    • india

                                    #37
                                    Re: a1278 board 820-2936-b doesn't charge

                                    SMC faulty

                                    SMC remove then u will check
                                    Last edited by piernov; 10-30-2021, 06:37 AM. Reason: double

                                    Comment

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