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  1. #1
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    iMac A1418 820-00431 A reboot instead of shut down

    The iMac does not shut down from OSX

    After a long press on the power button it does shut down

    took the LCD off
    disconnected all exept te power supply

    after connecting the 220V the iMac powers on automatically

    checked the wake-up on LAN, Air port wake up line en BT wake up lines
    They are OK

    Any other ideas ?

  2. #2
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    Re: iMac A1418 820-00431 A reboot instead of shut down

    A had a problem with a 2010 MacBook Pro years earlier, same issues. It had an airport card installed 180 degrees rotated. It killed WLAN feature and made computer restart instead of shutdown. Maybe helps you out somehow.

  3. #3
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    Re: iMac A1418 820-00431 A reboot instead of shut down

    You are right. I have seen this in a 2009 macbook as well. I took out the AirPort card but need to check the traces And circuits arround the AP card. Extra difficulties are there is no schematics of board view of this board. Using the 3588 as this looks like it.
    Last edited by Rene; 08-11-2019 at 05:54 AM.

 

 

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