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HELP!! My Zoom B3 has developed a hum

Discussion in 'Effects [BG]' started by lotusland9663, Feb 17, 2014.


  1. lotusland9663

    lotusland9663

    Joined:
    Oct 15, 2009
    Location:
    Vancouver BC Canada
    ...I know - it hums because it doesn't know the words - lol

    The hum is the same frequency as a B note on the 4th fret of the G string. It remains the same (low) volume regardless of how loud my bass/amp is.

    I've tried the B3 with 3 different amps - same result

    I've tried it with 4 different basses - same result

    I've swapped out and tested all the power cords, and patch cords - no problem there

    There is no hum when I use it with headphones - only with an amp and speakers

    Any ideas??
     
  2. Swift713

    Swift713

    Joined:
    Dec 4, 2006
    Location:
    The Berkshires, Ma
    Do you tune a 1/2 step flat?
     
  3. dannybuoy

    dannybuoy

    Joined:
    Aug 3, 2005
    Location:
    London, England
    Try plugging it into a different wall socket? Any other pedals sharing the 9v power supply?
     
  4. bassbrad

    bassbrad

    Joined:
    Aug 17, 2000
    Location:
    Leander, TX (outside Austin)
    Sounds top me that the L/Stereo magic jack on the B3 is defaulted to a stereo output, try the R output.
     
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  6. lotusland9663

    lotusland9663

    Joined:
    Oct 15, 2009
    Location:
    Vancouver BC Canada
    Thanks for the suggestions.

    I've used different wall outlets in different locations (home, studio, rehearsal space)- same result

    No other pedals are used with the B3

    And it doesn't matter which out (L or R) I use - no difference

    I guess the next step (maybe shoulda been the first step) is to contact Zoom and see if they have any suggestions
     
  7. DiabolusInMusic

    DiabolusInMusic Functionless Art is Merely Tolerated Vandalism Gold Supporting Member

    Joined:
    Dec 22, 2010
    Location:
    Saskatoon, Saskatchewan
    I would try to use another power supply if possible, maybe see if a local store can let you try one if you don't have a friend. Odds are the problem is in the unit, but it could be the power supply. Other than that I would jut contact Zoom.
     
  8. ZenG

    ZenG

    Joined:
    Dec 13, 2013
    Maybe you have a "groundloop" hum........

    I had a groundloop hum that came from my bass amp......I isolated it to the amp itself....but you could hear it elsewhere when I connected the amp to other equipment.


    I used an Ebtech anti-hum plug....plug this in the wall (3 prong) and then plug amp (3 prong) into that.

    It didn't entirely eliminate it but it certainly reduced it bigtime.
     

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