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MacBook Pro 16" (2019) A2141: power consumption? Dead GPU? MacOS not installing

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  • tomtom67
    Member
    • Mar 2021
    • 16
    • Germany
    #1

    MacBook Pro 16" (2019) A2141: power consumption? Dead GPU? MacOS not installing

    A friend brought his fresh-from-ebay macbook pro A2141 after he failed replacement keyboard plugging.
    I fixed all the little problems he introduced.

    I am unable to install macOS to this device. Both Sequoia and Catalina (from Internet Recovery) start to install, but after ~2-5 minutes into the installation the macbook does a hard restart (max fan spin for a split second, then reboot without chime).

    I noticed what I think is a very high power consumption, like 20V/1.7A when activating WiFi for internet recovery, and more like 20V/3.7-4.1A while downloading the recovery image or installing. The battery is charged 100% (as reported when in Recovery)

    If I am correct assuming that amp draw is not normal, what is the normal amp meter readings on that model?

    How can I find out which part of the system is drawing that power? I cannot boot macOS from external since that is prohibited, and I can't change that setting without an admin password, which I don't have since ssd is formatted^^

    Tags: None
    • tomtom67
      Member
      • Mar 2021
      • 16
      • Germany
      #2
      Gave up on this one, as my friend was offered to return the MacBook with full refund. I think the GPU was toast on this.

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