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    nc8430 buzzing noise when on battery

    Discussion in 'HP' started by petrv, Sep 5, 2006.

  1. petrv

    petrv Notebook Consultant

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    When my nc8430 is running on battery, I can hear buzzing noise from the left side of keyboard. Approx. every 3 seconds, I can hear some buzzing noise with duration of about 1 second. It is not very loud, but definatelly audible and annoying in a quiet office.

    The noise is not present when powered from the AC adaptor.

    Can anybody try to run his nc8430 on battery and put his ear on the left side of keayboard? Can you hear similar noise? I don't know if it's normal or not.

    EDIT: I observed that the noise is present only during idle operation. When I start for example transfering files via bluetooth, the noise stops. It comes back several seconds after it stops transfering.

    Thank you,
    Petr
     
    petrv, Sep 5, 2006
    #1