Big thanks to a2dconverterguyThanks for the Cap tip. I didn't need 9V, and wanted to use my existing power source. I cut an old USB cable and used just the black and red wires to wire up a new jack. Double checked the voltage with a meter.. then put it together. It works! Got a gig tomorrow night... stoked! Thought I'd share in case anyone was on the fence about repairing their own unit.