Problem with my M-Audio AV30

Discussion in 'General Electronics Chat' started by avivo, Aug 5, 2014.

  1. avivo

    Thread Starter New Member

    Aug 5, 2014
    1
    0
    Hi, I bought M-Audios AV30 A couple of years ago.Must say I was pleases with the product but recently they started to make a rustling sound, mostly coming from the left speaker. How can this be fixed? or is it a default with the product.

    Could I get a free replacement :D

    Please some one help I feel lost with out my monitors.

    Checkout my work https://soundcloud.com/avivo-production
     
  2. to3metalcan

    Member

    Jul 20, 2014
    228
    23
    I've fixed more power monitors than I care to think about. :rolleyes: The rustling sound you described can have several sources...power resistors at the output, the chip-amp itself beginning to fail, bad capacitors in the voltage regulator circuit (or bad decoupling at the chip-amp), or, in one case I remember, a section of the circuit trace itself that had become resistive...the noise went away when I bypassed it with a wire! :confused:

    How comfortable are you with troubleshooting? I don't know if you can get a free replacement, but a competent tech ought to be able to bust this noise with a little scope-work.
     
  3. to3metalcan

    Member

    Jul 20, 2014
    228
    23
    (Also, you can just open it and visually inspect the electrolytic capacitors...if they're bulging, leaking, or blown to bits, you've probably found the problem!)
     
  4. THE_RB

    AAC Fanatic!

    Feb 11, 2008
    5,435
    1,305
    Failing solder joints. Check with a strong light and good magnifier any solder joints on the PCB that carry power (larger tracks and power components) or show signs of heat and discolouring.

    Then re-solder. :)
     
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