So here's the story so far: I've had a 89 for a year now and few months ago I couldn't use the modeling sounds because pushing the modeling knob didn't activate the modeling mode anymore. Naturally I returned the guitar back to my dealer and got it back today and it worked for an hour or so but now it's dead again.
I checked the information on what they had done and it said they had only reattached the knob. So long story short, how do I reattach the damn thing? or do I send the guitar back again?