All the knobs and everything else seems to be functioning perfectly, and it still sounds fine. The problem is, I now can't really edit a patch without using an editor on the computer... which is a little upsetting!
Does anyone with experience in electronics know what the problem could be? Is this the sort of thing that might be fixable? Who could even fix it? So many questions...
I do hope there's someone out there that can help - it's my favourite piece of kit and I'm quite attached to it. Many thanks in advance!