Macbook Pro 2016 A1707 820-00281-A not booting

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  • PACh
    Member
    • Feb 2022
    • 24
    • Austria
    #1

    Macbook Pro 2016 A1707 820-00281-A not booting

    Hi, I got the macbook pro 2016 820-00281-A that doesnt boot, I checked almost all rails and they are present, didnt find any short and the amp sequence looks ok but doesnt boot. trackpad enabled, keyboard shift key light not present, when I insert a usb stick its light turns on for a sec. but then no activity. with display disconnected and connected to external monitor same problem. I reflashed the bios with a clean me bin that I downloaded from this forum no difference.

    L7211, L7221, L7231 on boot: 1.112 then 0.700 A

    PCH and other chips get hot but not really hot (please see pics)
    The videos are the amperage behaviour while booting, the first is with the battery attached, the second is without battery attached. When the battery is connected doesnt make one reboot cycle. I think the battery is already charged because before with the battery connected it was using like 1Amp more. Both videos are with the board connected (everything connected) I tried disconnecting one by one trackpad, keyboard, touchpad, etc and same problem.

    Battery attached
    https://imgur.com/a/SO7Fh0y



    No Battery attached
    https://imgur.com/a/0enoGKa
    Attached Files
    Last edited by PACh; 01-09-2023, 09:32 AM.
    Tags: None
    • evolpe
      New Member
      • Aug 2020
      • 2
      • Italia
      #2
      Re: Macbook Pro 2016 A1707 820-00281-A not booting

      do you have some hotspot on cpu/gpu?

        Comment

        • mon2
          Badcaps Legend
          • Dec 2019
          • 14659
          • Canada
          #3
          Re: Macbook Pro 2016 A1707 820-00281-A not booting

          Could be bad GPU.

          See here:

          No image, EDP_PANEL_PWR_EN missing, machine taking 20 V and 1.4 A at the first kick then 20 V 0.9 A and the current was dropping down to 0.8 A -> 0.6 A -> 0.4 A
          https://repair.wiki/w/A1707_2016-201...ar_MacBook_Pro

            Comment

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