MacBook Pro Charges When Off, But Not When On (MBP 2014 15 Inch) 820-3662-A

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  • itsmeapple
    New Member
    • Feb 2025
    • 6
    • PH
    #1

    MacBook Pro Charges When Off, But Not When On (MBP 2014 15 Inch) 820-3662-A

    Hello everyone,

    I'm facing an issue with my MacBook Pro.

    When it's switched off, it charges while the battery is connected. However, when it's powered on, the charging stops after a few seconds.

    Another strange thing is that when I disconnect the battery and plug in the charger, the MacBook Pro turns on and runs without any issues.

    I've already tried using a different OEM charger, but no luck. I even swapped the charging port DC-IN, but the problem persists.

    Has anyone else experienced this issue before?

    Thank you!
    ​
    https://youtube.com/shorts/PYsPnCea2..._AVrsJdi2ueUWP
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 14211
      • Canada
      #2
      What is the power rating of the charger? Are you sure the charger is an original and not 3rd party or a fake?

      When you lose even the green led onboard, you have lost the 3v42 voltage rail. Do you have a multimeter for some testing?

        Comment

        • itsmeapple
          New Member
          • Feb 2025
          • 6
          • PH
          #3
          Hi thank you for your reply. I am using original 85W Magsafe 2 charger and it is in good condition. I used coconut battery to check and this is what i saw.

          When battery is at around 77.2% Charger not connected (Image 1)

          After 3min charging on (Image 2)

          After 10min charging on (Image 3)

          After 11min charging stopped (Image 4, Image 5)

          ​Battery removed and charger connected system running. (Image 6)

          Click image for larger version Name: 1.jpg Views: 54 Size: 123.1 KB ID: 3578130
          Click image for larger version Name: 2.jpg Views: 53 Size: 128.4 KB ID: 3578129
          Click image for larger version Name: 3.jpg Views: 52 Size: 125.4 KB ID: 3578128
          Click image for larger version Name: 4.jpg Views: 52 Size: 113.0 KB ID: 3578127
          Click image for larger version Name: 5.jpg Views: 51 Size: 118.0 KB ID: 3578126
          Click image for larger version Name: 6.jpg Views: 57 Size: 167.5 KB ID: 3578125

            Comment

            • mon2
              Badcaps Legend
              • Dec 2019
              • 14211
              • Canada
              #4
              See attached. Review D7005 = dual, common cathode diode.

              Remove all power. Disconnect the battery. Disconnect the power adapter.

              Meter in DIODE mode.

              Place the red meter lead onto pin #1 of this diode (anode); black meter lead onto pin #3. Meter should conduct.

              Reverse the meter leads and the meter should now block (OL).

              Repeat with pins #2 and #3. Post each measurement.


              Click image for larger version Name: D7005_bv.png Views: 80 Size: 43.7 KB ID: 3578151


              Click image for larger version Name: d7005.png Views: 0 Size: 103.1 KB ID: 3578150

                Comment

                • itsmeapple
                  New Member
                  • Feb 2025
                  • 6
                  • PH
                  #5
                  Thanks mon2 will follow the steps once i get home and post all the measurements.

                    Comment

                    • piernov
                      Super Moderator
                      • Jan 2016
                      • 4435
                      • France
                      #6
                      If PP3V42_G3H was lost, the machine wouldn't run anymore.
                      OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                        Comment

                        • itsmeapple
                          New Member
                          • Feb 2025
                          • 6
                          • PH
                          #7
                          Hi all,
                          I haven't got time to check the board, but I will post the results in the coming days. Thanks.

                            Comment

                            • itsmeapple
                              New Member
                              • Feb 2025
                              • 6
                              • PH
                              #8
                              mon2 Hi, finally i got time to work on this board. just to be clear i'm still learning things and i'm not a pro in here. can you please tell me which chip i have to test. Thank youClick image for larger version Name: IMG_3988.jpg Views: 24 Size: 3.25 MB ID: 3597429

                              THank you

                                Comment

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