Replacement fan stops dead then revs up to max rpm, rinse, repeat
The original fan in this Mac Mini Late 2014 had a buzzing noise develop so I ordered a used Mac mini fan from ifixit, installed using the very clear instructions on the site (I love ifixit!), replacing the thermal paste in the process. The replacement fan worked fine for a while but in the last few weeks it has intermittently stopped spinning, reached ‘0’ rpm, then revvs up to max rpm, back to ‘0’, up to max rpm, then settles to the auto-set speed or the manually set speed.
The zero-to-max rpm cycle can repeat 2-4 times. This phenomenon is increasing in frequency. I’ve been monitoring the internal temps and fan speed via Macs Fan and I’ve seen high temps when this occurs, it’s possible that I’m not seeing all instances of the problem and just notice the fan is off when I hear it revv up. Today I shut down and reset the NVRAM and SCM and the problem started again about an hour after restart. Only app open was Chrome to stream a radio station.
What might be happening?
Bu iyi bir soru mu?