Acoustic B20 wiring diagram

Discussion in 'Amps [BG]' started by music4fun, Feb 2, 2013.


  1. music4fun

    music4fun

    Joined:
    Nov 20, 2012
    Messages:
    3
    HI, I need the schematic for the B20, my husband can fix it if I had this. The fuse keeps blowing, he checked all he could without a diagram. If we unplug the transformer the fuse doesn't blow so it must be something on the circuit board. Hate to throw amp away, but not worth sending in to repair.
    thanks a bunch. Any repair ideas would be great.
     
  2. justjcarr

    justjcarr

    Joined:
    Apr 17, 2013
    Messages:
    1
    Check your capacitors. The two larger ones on mine went bad. You can tell they're bad if they're bulging on top.
     
  3. BassmanPaul

    BassmanPaul Gold Supporting Member

    Joined:
    Aug 25, 2007
    Messages:
    13,849
    Location:
    Toronto Ontario Canada
    Very likely the output devices are toast. they'll need to be replaced. the outputs will be obvious unless they are an integrated power amp chip.
     

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