MBPR Display Humming Noise

Discussion in 'MacBook Pro' started by MacReloaded, Jul 6, 2012.

  1. MacReloaded, Jul 6, 2012
    Last edited: Jul 6, 2012

    MacReloaded macrumors 6502

    MacReloaded

    Joined:
    Oct 31, 2007
    Location:
    Canada
    #1
    For those with the MBPR, does your display make a humming noise when it is at 1/16 to 5/16 brightness?
     
  2. MH01 macrumors G4

    MH01

    Joined:
    Feb 11, 2008
    #2
    Interesting. I have not noticed this. Will try when I get home.

    My Imac on the other hand...... boy does that humm....
     
  3. CLASSIC MUSCLE macrumors member

    Joined:
    Jun 16, 2012
    #3
    It might be the keyboard lighting. Try turning off the keyboard lights and see if the humming goes away. You will hear it go in and out as the keyboard lights go on and off. I'm on my 2nd RMBP and returned the first because the keyboard lights were so noisy. At first I thought it was the display humming but side by side I figured out it was definitely the keyboard lighting.
     
  4. MacReloaded thread starter macrumors 6502

    MacReloaded

    Joined:
    Oct 31, 2007
    Location:
    Canada
    #4
    I can hear a subtle noise as I turn on and off the keyboard lights, but the display noise is much louder and changes frequency as you adjust between 1/16 and 5/16 brightness.
     
  5. TheMacBookPro macrumors 68020

    TheMacBookPro

    Joined:
    May 9, 2008
    #5
    Maybe my ears are just really bad but I can't hear any humming regardless of screen brightness or keyboard backlight brightness.

    EDIT: No change in sound whether AC adapter is plugged in or not.
     
  6. Chupa Chupa macrumors G5

    Chupa Chupa

    Joined:
    Jul 16, 2002
    #6
    Does it make a difference if the a/c adapter is plugged in?

    I've had a couple previous MBPs that had an obnoxious high frequency whine/hum which was greater at higher brightness and when plugged in. Both cases it was the screen inverter.
     
  7. MacReloaded thread starter macrumors 6502

    MacReloaded

    Joined:
    Oct 31, 2007
    Location:
    Canada
    #7
    Still hums whether the A/C adapter is connected or not.
     
  8. doh123 macrumors 65816

    Joined:
    Dec 28, 2009
    #8
    typical inverter issue... you'd need to take it in to Apple and let them hear it, they'll have to replace the inverter...
     
  9. Aragorn234 macrumors member

    Joined:
    Mar 10, 2012
    Location:
    Melbourne, Australia
    #9
    I have this humming noise also coming from my rmbp.
    I did not buy it through apple but an apple reseller (reputable Australian retailer). Can I take this into an apple store or do I need to return it to the reseller?
     
  10. JohnDoe98 macrumors 68020

    Joined:
    May 1, 2009
  11. MacReloaded thread starter macrumors 6502

    MacReloaded

    Joined:
    Oct 31, 2007
    Location:
    Canada
    #11
    My replacement arrived two days ago and it still hums, although a bit quieter and only from 1/16 to 4/16 brightness. Oh well.
     
  12. psykick5 macrumors 6502

    Joined:
    Sep 4, 2011
    #12
    Also no noise here... that's weird. I have young ears, too.
     

Share This Page