I just picked up a Sterling Ray35 in very nice condition. It sat for the last 4 years from what the guy said. I cleaned it up, oiled fretboard, new strings, plugged it in an nothing. Just a faint fuzz sound. Same with battery out. I pulled out the output jack and it was rusted and corroded? I mean 6 Qtips with contact cleaner covered in gunk. Put it back together and same. Think maybe corrosion got into the layers on the jack and is not making contact?