PSA Unit to Boss Super Overdrive SD-1

Discussion in 'Pickups & Electronics [BG]' started by DEREK R M, Dec 20, 2014.

  1. DEREK R M


    Dec 20, 2014
    I have constructed 9v PSU from Guitars of Love but when I plug it in to the above pedal it just hums and the 9v LED dims down.
    I have read conflicting views about neg /pos polarity

    Can someone help me with this problem please and could I have damaged the pedal if I had wrong polarity

    Many Thanks

  2. Isn't the polarity indicated on the pedal?
  3. ChristoMephisto


    Sep 4, 2011
    Looking at my Boss adapter, the center is negative.
    pretty hard to break a Boss pedal tho