Macbook Pro A1990

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  • GfilipeZ
    Member
    • May 2021
    • 43
    • Portugal

    #1

    Macbook Pro A1990

    Hi,

    I'm working on a 820-01814-A Logic Boar, that have some water damage.
    I cleaned the areas with corrosion, and was able to turn on the Mac. Furthermore, I have also to put a new battery, because the original was faulty.
    The Mac do the boot normally, but when I plug the charger, starts charging with normal current values and then starts falling until 0.067A. If I unplug and plug again de charger on USB-C port, the current stabilizes on 0.470A (on normal case, it should go until 3/4A):
    Also, when the Mac go to sleep mode, or I turn it off, the current also draw to 0,067A. So the Mac doesn't charge when on sleep mode or turned off.

    Anyone with some clue?

    Best regards.

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  • robka
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    Hi,

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  • DATATECH85
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    by DATATECH85
    Hello,
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    The Macbook consumes 5V and 0.019A at USB-C. There seems to be a partial short-circuit on the PPBUS_G3H rail as I have 0V on this rail.

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    07-24-2024, 06:34 AM
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    the MacBook now pulls 20v 2.4amps the trackpad clicks but it does not ever attempt to power on not even fan spin. After PCH replacement I was able to get it in dfu mode 1 time and restore bridge OS, but now the MacBook will no longer go into DFU mode.

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    06-20-2025, 08:54 AM
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