MacBook Pro Keyboard Why Apples Dust Excuse Is Wrong[Teardown and Explanations]
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Another interesting test would be heating up those microchips and see if potentially lose pins might be reflowed by this procedure.
The company I work with has 8-10 MPB with butterfly keyboards, nobody had an issues yet. OK, one issue with a USB-C port no longer charging.
I must say I actually love the butterfly keyboard, and I wouldn't change it back. Obviously, a working one.
I also really like the keyboard.