Questions about a very soft buzz upon waking from sleep

Discussion in 'MacBook Air' started by JasG, Nov 16, 2009.

  1. JasG macrumors member

    Jul 12, 2009
    I have a Rev C, SSD. Absolutely Love it. Can't bear the thought of giving it up even for two or three days, so I thought I'd ask here first:

    When I wake from sleep -- with the computer open, just by pressing a key -- I am suddenly getting a very soft buzz, sounds almost like a second or two of static, pretty clearly coming from the left side of the trackpad, right where my left palm will soon rest.

    Anyone one have a similar buzz, or any guesses?

    What is right under the case at that spot? Thank you
  2. stoconnell macrumors 6502

    Mar 22, 2009
    Rockville (Despite REM's plea.)
    The fan is on the left side of the unit, but it is a bit further toward the back of the unit, but depending on the surface, it could just be a vibration. If you want to see, there is a sticky link at the top of the forum showing an MacBook Air disassembled, or you can check out the MacBook Air tear down at
  3. gnr319 macrumors member

    Sep 18, 2009
    If I am guessing correctly, it would be the same sound that the MBA makes when you power it on, i.e. a faint "Bzzt" that lasts for about a second.

    In that case, it is normal.
  4. ayeying macrumors 601


    Dec 5, 2007
    Yay Area, CA
    Is it the fan powering on? Mine does that when the fan powers on, after it's on, the sound goes away.
  5. JasG thread starter macrumors member

    Jul 12, 2009
    No, the fan is not on.

    It may well be the startup noise, but it seems slightly strange that I've had the machine for several months now and never noticed it before. I'll think I'll shut down and start up again and see if it is the same noise. The description above sure seems to match it. Thanks all.
  6. gnr319 macrumors member

    Sep 18, 2009
    Let me know. It's good to keep in mind that just because we have SSD HDs it doesn't mean our machines will emit no sound.
  7. alphaod macrumors Core


    Feb 9, 2008
  8. iGrant macrumors 6502a

    Sep 20, 2006
    My Macbook CD did the same thing for 3 years till it died last week, I never worried about it . . .

  9. JasG thread starter macrumors member

    Jul 12, 2009
    I think you got it. Thanks. It makes the same noise upon start up if I listen carefully. I simply must not have noticed it upon waking from sleep before.

    My obsessiveness notwithstanding, I am nuts about this machine.

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