PSU makes a noise when scrolling up and down webpages

Discussion in 'MacBook Air' started by Artmuzz, Dec 26, 2011.

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  1. Artmuzz, Dec 26, 2011

    Artmuzz macrumors 6502

    Joined:
    Jun 17, 2008
    #1
    I have noticed a problem with my MBA 11inch power supply when I scroll up and down webpages. When I scroll up and down using the trackpad I hear a slight buzzing noise from the power supply unit. Is this normal? Please advise.

    I am using my MBA on my bed with the power supply unit next to it.
     
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  2. wrinkster22, Dec 26, 2011

    wrinkster22 macrumors 68030

    wrinkster22

    Joined:
    Jun 11, 2011
    Location:
    Toronto
    #2
    my macbook air charger makes this noise also. It is normal.
     
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  3. superego, Dec 27, 2011

    superego macrumors member

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    #3
    If you're using unearthed power adapter, I believe that is normal. Use earthed and the problem should go away. If it happens even on battery, it's not normal and you should take your laptop back. [Edit: I read first that the sound was coming from your laptop. I'm not familiar with the issue where the charger is making the noise.]
     
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  4. Artmuzz, Dec 28, 2011

    Artmuzz thread starter macrumors 6502

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    #4
    The sound isn't coming from my MBA. it is coming from the PSU when I scroll up and down on the trackpad. I am glad its normal as I really wasn't wanting the hassle of taking it back for a repair.
     
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