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オリジナル投稿者: Dan ,

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Sounds like the feed to the Bluetooth board from the logic board is having issues!

I would first trace out the continuity of the cable from the logic board connector to the BT board connector to make sure its not a simple connection issue.

[image|2293129]

If you’ve already done that then that starts to get into repairing the logic board. So here’s a snippet of the area we are working on. I would check external USB Ports to see if they are working as that could offer a clue if the issue is the hub chip or the feed to it.

[image|2293130]

And here’s the full breakdown of the logic

[image|2293131]

You’ll need to probe the voltages to see what failed

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