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Re:How to Improve MacBook Pro Performance and Thermals by fafl on Monday April 08, 2019 @03:40AM (#19603012)
Nice find, but please don't blow compressed air into a fan without blocking its rotation. It will induce currents and can cause damage to your mainboard.
Re:How to Improve MacBook Pro Performance and Thermals by yulaow on Monday April 08, 2019 @05:36AM (#19603615)
Even more important: do not blow air in the opposite direction of the one the fan is made to rotate. If you are unlucky you'll damage it, if you are very unlucky it will stop working enterely. Source: I broke a lot of them
Re:How to Improve MacBook Pro Performance and Thermals by sundvor on Monday April 08, 2019 @05:57AM (#19603703)
I'm pretty sure I managed to blow dust into the screen of an XPS 12.. So yeah, it pays to exercise caution.
Re:How to Improve MacBook Pro Performance and Thermals by jmiserez on Monday April 08, 2019 @05:31AM (#19603594)
Seems like a problem a simple diode would fix. Is this really an issue?
Re:How to Improve MacBook Pro Performance and Thermals by LeonM on Monday April 08, 2019 @08:59AM (#19604749)
Most motherboards (but not all) have basic protection for this, so it's quite unlikely that you break your motherboard electronically that way.

That said, blowing compressed air at a fan will spin the fan much faster than what it was designed for. So you still risk breaking the fan mechanically. Always hold the fan when blowing compressed air at it.

Re:How to Improve MacBook Pro Performance and Thermals by leonardmh on Tuesday April 09, 2019 @12:05AM (#19611701)
Almost certainly not an issue on Apple hardware. Maybe on discount motherboards.
Re:How to Improve MacBook Pro Performance and Thermals by appleflaxen on Monday April 08, 2019 @06:59AM (#19604002)
that's a really good point. thank you for pointing it out. I've cleaned many a fan, and have never thought about this.