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petronic | 7 years ago

It's apparently a known phenomenon called "electrovibration" - I wound up googling it the first time that it happened.

https://blog.somaticlabs.io/electrovibration-in-ungrounded-m...

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Reason077|7 years ago

My old MacBook Air did this a lot! My 2017 13" MacBook Pro does it too, but it's intermittent and much less noticeable. In both cases it completely disappears if you unplug the AC.

LyndsySimon|7 years ago

Ditto. I had a late-2013 15” MBP that did it consistently, and it was worse when you touched the bottom of the chassis. My mid-2015 MBP did it slightly, and I’ve not detected it on my current-gen 13” MBP or any of my non-Apple hardware.

ksec|7 years ago

I didn't notice it when I had the 2017 Macbook, but both my Macbook Air and MBP 2015 has the same issue. Why hasnt Apple solve this after all these years?

Edit, I am using it with the UK plug, unsure how this is a grounding issue.