MacBook Pro Retina Electronic noise

Discussion in 'MacBook Pro' started by iDutchman, Dec 1, 2012.

  1. iDutchman macrumors 6502a

    Joined:
    May 9, 2010
    Location:
    Amsterdam, NL
    #1
    Hi,

    My Retina MacBook Pro makes (quiet) electronic noise from time to time.
    It's hearable in quiet surroundings and can be really annoying.

    Now, there are no moving parts, so this is very unusual. Also, it happens, whether fans kick in or not. So it's not that.

    I have an Genius appointment and they will replace the motherboard and fans due to another issue. Briefly, when I use Quicktime to do some screen recording, the Mac will lag severely and becomes unusable. It also sometimes stutters during audio playback (in iTunes and Spotify).

    Only due for this reasons, they will replace those parts.

    Now, back to the electronic noise.


    You can listen to the sound here (better hearable when using headphones)

    Just click the green "Download this file"
    http://www.wikiupload.com/UF3G5SU6L6CMIT8

    it's a 6 second recording. Recorded with iPhone 5 mic so bear with me!

    I can replicate this when I for example:

    1. Open Handbrake
    2. Download a file
    3. Buffer a IMDB trailer
    4. Open BlackMagic Disk Speed Test
    5. Download a software update (via the App Store)

    Because this all concerns writing/reading from the SSD, could this be the component making this sound?

    I currently reside in Spain (and deal with a Spanish Apple Store - a bit of a language barrier) and I don't have a back up solution here.

    They won't replace the SSD (so not worries), but then again, the issue might not be solved.

    What do you guys think might be the issue here?

    *The system works just fine but the two other small annoyances led the Geniuses into replacing the motherboard + fans. I will get a call as soon as the parts are in. I continue to just use the machine until the call..*
     
  2. 2contagious macrumors 6502a

    2contagious

    Joined:
    Apr 29, 2008
    Location:
    UK
    #2
    Hi, try turning off the Keyboard backlight COMPLETELY and see if it gets rid of the buzzing sound. MacBook Pro keyboard backlights have been buzzing for several generations now...
     
  3. iDutchman thread starter macrumors 6502a

    Joined:
    May 9, 2010
    Location:
    Amsterdam, NL
    #3
    Tried. But that's not the problem solver nor the issue. :(
     

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