Posted by Ray on June 18, 2006 at 15:47:04:
I just bought a digitech GSP21 off of ebay, and all I get is humming from the output. Ive narrowed the problem to the inputs, but dang if I know what goes were on those circiut boards {;( If anyone has or knows where to get a schematic, it would be geatly appreciated!!! Thanks, Ray.