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A2681 M2 MacBook Air Dead Logic Board

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    #1

    A2681 M2 MacBook Air Dead Logic Board

    Hello...

    My sister purchased an M2 MacBook Air a year and a half ago. While she was using it a week ago, it randomly shut off and no longer powers on. There are no signs of life and not even the MagSafe indicator LED lights up.

    We took it to Apple and they disconnected the battery and tried a bunch of stuff before they declared the logic board "brain dead" and quoted us about £567 to replace it. Typical of them...

    eBay replacements run about £367 with the Touch ID sensor included.

    I did consider to probe the logic board for shorts myself in hopes that maybe its a shorted capacitor or something. There are some really useful schematics here. But if its a BGA chip, I wouldn't be able to replace it. I tried to find guides online from well-known people like Louis Rossman but it's all about the Intel Macs. Nobody seems to know much about this model.

    This is so outrageous. We paid £1000 for that thing and its already dead. Any suggestions?
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    #2
    Post a pic of the power adapter head with the led.

    Is this not a usb Type C power adapter? Have you tested with a fresh known good power adapter? Assuming the propeller heads have at the store?

    You can probably source one from Amazon and return it if it is not required.

    Do you have test tools like a multimeter? Be very careful with the logic board as a wrong move can cause more damage.

    If a usb type c adapter then a usb c meter is required to monitor the voltage and current draw being supplied and consumed by the logic board.

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      #3
      From the schematics of this model, A2681, the power adapter should be a USB Type C style. This USB connector can be used in either direction of mating with the logic board. Straight or by rotating the connector head by 180 degrees.

      Do test to apply the original power adapter onto the board in both directions. Any difference?

      To move forward for a review, you will require a multimeter to check on voltages. A USB type C meter is recommended. They vary in price and features but most will be sufficient for this investigation.

      For example,

      Fasizi TC66 Type-C PD Trigger USB Voltage Ammeter Capacity Meter 2 Way Measurement Charger Battery APP PC USB Tester: Amazon.co.uk: DIY & Tools

      This model of meter can be applied in either direction. To use it, insert this tool into your macbook, attach the power adapter you typically use onto the backside of this tool where you see the arrows. This meter should light up if there is the power up default on the adapter @ 5 volts. This tool will offer the voltage and current draw being consumed by the target logic board. We need to know these measurements.

      Then unplug the power adapter from the wall. Flip the power adapter head by 180 degrees and test again. This permutation is now testing the other half of the USB type C port on the laptop. Repeat the same 2 tests for the other USB port on the macbook. Post each measurement.

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        #4
        https://www.apple.com/uk/legal/statutory-warranty/uk/
        OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

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