Macbook humming sound? - Page 2
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  1. #11
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    Quote Originally Posted by Macco View Post
    Im using wat looks to be a normal Macbook charger, im pretty much new when it comes to Macbooks!
    The long extension cord has 3 pins and grounds your Macbook, which can cause ground loop interference (noise).




    Whereas the small plug has only 2 conducting pins and effectively ground lifts the laptop, preventing it from causing a ground loop.

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  2. #12
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    Case closed it was the charger!! All working now. Thanks to everyone who gave advice

  3. #13
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    What about the charger? Was it the plug, or a bad charger?

  4. #14
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  5. #15
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    Quote Originally Posted by Macco View Post
    Case closed it was the charger!! All working now. Thanks to everyone who gave advice
    If the 3 pin extension was causing the problem, you can use a standard figure-of-8 lead instead which is 2-pin like the small plug.

    http://www.amazon.co.uk/Figure-mains.../dp/B000Q8HF04

    Ground lifting your laptop is a somewhat better solution than using a ground loop isolator, which attenuates low frequencies.
    VCM100 / X1 / DJM250 / DJM900 / CDJ2000s / Maschine / Audio2+4 / 2i4 / HS8s / TSP 2.6.8
    Macbook Air i7-3667U+8GB 10.9 / Win7x64 i5-3570k+24GB


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