Fan stopping causes subtle "click" sound

Discussion in 'MacBook Pro' started by nejc92, Nov 5, 2015.

  1. nejc92 macrumors newbie

    Joined:
    Nov 5, 2015
    #1
    I've recently bought a new macbook pro 13 retina (early 2015) and I've noticed that when the fan stops it causes a subtle but noticeable "click" sound. I was able to reproduce this with the yes stress test. To test this type yes > /dev/null & yes > /dev/null & yes > /dev/null & yes > /dev/null & in the terminal, wait for the fan to start working and then stop the processes with killall yes. After a few seconds (I suspect when the fan is slowed down to the certain speed) a subtle "click" sound appears. Is the fan designed that way, so it doesn't spin unnecessarily? Or should I consider returning the unit? Thank you for the responses.
     
  2. danwestbrook macrumors regular

    danwestbrook

    Joined:
    Oct 11, 2007
    Location:
    Surrey, UK
    #2
    I used to have that on my 15" 2012 Mac Pro just had the right fan replaced recently and been fine ever since, I would book in with Apple and arrange a replacement, mine was only £18 as it was out of warranty.
     
  3. Toutou macrumors 6502a

    Toutou

    Joined:
    Jan 6, 2015
    Location:
    Prague, Czech Republic
    #3
    Yes, the fan is supposed to stop completely (this is a new thing, earlier models' fans used to idle), but I'm not sure about the click.
     
  4. nejc92 thread starter macrumors newbie

    Joined:
    Nov 5, 2015
    #4
    I've been monitoring the temperatures and everything seems to be fine. It's just the click that bothers me, not sure if I should worry about it or not.
     

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