MacBook A1707 820-00928-A 20V - No boot

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  • Jenzo
    Senior Member
    • Jul 2019
    • 135
    • Belgium
    #1

    MacBook A1707 820-00928-A 20V - No boot

    Hey, got this macbook in and it's a little strange.

    The device (no battery connected) starts at 20V 1.4A, then drops to 0.9a, and then to 0.09a.

    The boot sequence seems to complete, but the CPU goes to 100 degrees celcius within 2 seconds, and you can hear a current-like sound coming from it. UB000 and U8605 get hot as well, but no more than 50 degrees celcius. U1100 spikes to 70 degrees celcius as well.

    PPVCC_S0_CPU measures around 1V.

    I'm tempted to say the CPU is toast, but seems so strange since there is no liquid damage or anything. The only weird this is that I found some metal flakes next to the CPU, but I'm assuming these are from the screw hole from the heatsink, altho the other spots don't have this. Included a picture of this.

    Anything I could check to make sure?
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