Does your nTB MBP have crackling sound near left speaker during startup?

Discussion in 'MacBook Pro' started by snsd, Jan 4, 2017.

  1. snsd macrumors newbie

    Joined:
    Jul 22, 2013
    Location:
    CA
    #1
    My MBP has static noise/crackling sound near the left speaker during startup. It's only audible when I put my ear next to the keyboard. And it only happens after I login with my password, when the loading bar is about to reach 50%. (I have Filevault turned on and its running 10.2.2 if that matters.)

    Just curious if anyone's nTB MBP has the same issue like mine.
     
  2. vasatrya macrumors newbie

    Joined:
    Jan 4, 2017
    #2
    I hear a crackling/static noise every hour or so if I'm on my laptop, whether or not I'm playing music. It's like a quick *pop* not too loud, but loud enough for me to notice..add it to the list of problems. I bought my macbook new but it had 8 charge cycles on it.

    I have a base nTB
    --- Post Merged, Jan 6, 2017 ---
    Just FYI, i found this thread...

    http://forums.macrumors.com/threads/2016-macbook-pro-problem.2022709/

    probably what you're talking about
     
  3. WhiteWhaleHolyGrail macrumors 6502a

    WhiteWhaleHolyGrail

    Joined:
    Nov 14, 2016
    #3
    No pops or crackles ever. Return it!
     
  4. justinus macrumors newbie

    Joined:
    Feb 6, 2017
    #4
    Is this the sound you're referring to? I have Filevault enabled, too. I thought it was the keyboard backlight triggering the discharge, but it may be the decryption process...

    https://forums.macrumors.com/threads/15-2016-mbp-speaker-crackling.2015467/page-8#post-24334757
     
  5. santicpo macrumors newbie

    santicpo

    Joined:
    Feb 18, 2017
    #5
    I don't have FileVault activated and the pop sound is there.
     
  6. justinus, Feb 23, 2017
    Last edited: Feb 23, 2017

    justinus macrumors newbie

    Joined:
    Feb 6, 2017
    #6
    Thanks for the info! I'm not suggesting FileVault is the only trigger, I just noticed that for mine the "pop" happens before the keyboard backlight activates. It could very well be any process that causes a voltage spike to trigger the discharge/"pop."
     
  7. santicpo macrumors newbie

    santicpo

    Joined:
    Feb 18, 2017
    #7
    Okay. But in my case happens randomly: not only during startup... Perhaps Apple needs more time to investigate... And we should be more patient... or not... o_O
     
  8. justinus macrumors newbie

    Joined:
    Feb 6, 2017
    #8
    It occurs randomly for me too, even after boot. I took out the word "pre-boot" to clarify. I keep harping on the boot process because it's easy to reproduce the issue that way. But if it is static electricity accumulating inside the notebook, any time there's a path for that energy to be released (e.g., during a voltage spike from the CPU, keyboard backlight, or speakers being used) it'll "pop." I'm taking mine to Apple this week to see if it's a shielding or grounding issue.
     

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