Recent content by daninazza

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    820-00840 no brain after Big Sur update

    Thanks a lot for your quick answer! Before I look for someone with a Medusa programmer nearby, is there any kind of measurement that can help me exclude a faulty CPU, just in case? Thank you again
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    820-00840 no brain after Big Sur update

    Hi everyone, I am trying to troubleshoot a 820-00840 board from my dad's macbook. He told me that during Big Sur update (from 10.10), the macbook turned off and then never switched on again. The symptoms: When powered on, fan spins, trackpad clicks. No image (checked with light on screen), no...
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