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    Sager NP9170 buzzing noise (no moving parts)?

    Discussion in 'Sager and Clevo' started by spandexninja, Mar 13, 2013.

  1. spandexninja

    spandexninja Notebook Consultant

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    I opened up the bottom of my NP9170 while it was turned on (at the time only an mSATA SSD was installed) and noticed that there was a quiet buzzing noise coming from the CPU area. This is when the fans were off and there were no moving parts in the laptop.

    What is this buzzing noise from? Is this normal for the NP9170?
     
    spandexninja, Mar 13, 2013
    #1
  2. Ingvarr

    Ingvarr Notebook Deity

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    These are sounds of switching coils of DC-DC convertors.
    Its normal, though some laptops have it less, some more.
     
    Ingvarr, Mar 14, 2013
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  3. Support.1@XOTIC PC

    Support.1@XOTIC PC Company Representative

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    Yeah, nothing to worry about. Even if you don't see anything happening, if it's on there is still magic happening in the electronics.
     
    Support.1@XOTIC PC, Mar 14, 2013
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  4. Prostar Computer

    Prostar Computer Company Representative

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    Most likely it is purely electrical. I used to hear a faint, intermittent, high pitch ringing from another system, which was also electrical (desktop power supply). That sort of voltaic cacophony is pretty normal. :)
     
    Prostar Computer, Mar 14, 2013
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  5. Mighty_Benduru

    Mighty_Benduru Notebook Consultant

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    BBBBzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz....................................... trolling :p
     
    Mighty_Benduru, Mar 15, 2013
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  6. Meaker@Sager

    Meaker@Sager Company Representative

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    Yes it's the power circuitry (you can kind of hear the differences depending on load) you can also hear them on the audio line :S
     
    Meaker@Sager, Mar 15, 2013
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  7. Ingvarr

    Ingvarr Notebook Deity

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    I miss separated audio I/O mini-board on W701. You heard nothing from there.
     
    Ingvarr, Mar 15, 2013
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  8. Meaker@Sager

    Meaker@Sager Company Representative

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    You don't on the MSI models either, it's just clevo went with a very odd design with the P1x0em systems.
     
    Meaker@Sager, Mar 15, 2013
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