VOX wah problem

Discussion in 'Effects, Pedals, Strings & Things' started by PaulReedDrZ, Feb 19, 2009.

  1. Feb 19, 2009 #1
    PaulReedDrZ

    PaulReedDrZ Member

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    My VOX wah stopped wahing, now it acts more like a volume pedal, any ideas?fixes?
     
    PaulReedDrZ, Feb 19, 2009
    PaulReedDrZ, Feb 19, 2009
    #1
  2. Feb 19, 2009 #2
    stinkfoot

    stinkfoot Member

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    Either the inductor has come loose/broken, or the 4.7uF electrolytic cap is busted. I'd start out by re-flowing the solder joints on the inductor - it is a fairly big part, which can sometimes crack the solder joints
     
    stinkfoot, Feb 19, 2009
    stinkfoot, Feb 19, 2009
    #2
  3. Feb 20, 2009 #3
    PaulReedDrZ

    PaulReedDrZ Member

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    the inductor seems fine, im not sure which one is the 4.7uF electrolytic cap?[​IMG]
    heres some pics of the board, anything not look right?
     
    PaulReedDrZ, Feb 20, 2009
    PaulReedDrZ, Feb 20, 2009
    #3
  4. Feb 20, 2009 #4
    PaulReedDrZ

    PaulReedDrZ Member

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    [​IMG]
     
    PaulReedDrZ, Feb 20, 2009
    PaulReedDrZ, Feb 20, 2009
    #4
  5. Feb 20, 2009 #5
    thilton59

    thilton59 Supporting Member

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    It looks like you've already re-soldered a few pads on the second pic? Check continuity on everything. Sometimes you'll loose contact from the pad to the solder glob and only some voltage will bleed through, you can't tell by looking at it. It's a small board, should'nt be too much work.
     
    thilton59, Feb 20, 2009
    thilton59, Feb 20, 2009
    #5
  6. Feb 20, 2009 #6
    Wilson Effects

    Wilson Effects Member

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    4.7uf is C2 make sure you don't have any solder bridges also.
     
    Wilson Effects, Feb 20, 2009
    Wilson Effects, Feb 20, 2009
    #6
  7. Feb 20, 2009 #7
    PaulReedDrZ

    PaulReedDrZ Member

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    are these what you would call solder bridges?
    [​IMG]
     
    PaulReedDrZ, Feb 20, 2009
    PaulReedDrZ, Feb 20, 2009
    #7
  8. Feb 20, 2009 #8
    mobis8

    mobis8 Member

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    um yeah. I would take your iron, heat it up and suck away as much on the parts you circled. You are jumping parts of the circuit when you bridge like that.
     
    mobis8, Feb 20, 2009
    mobis8, Feb 20, 2009
    #8

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