So I've had my Conklin 7 string for about 11 years now and everything has been fine up until this last week when during a jam session the sound would just begin to dim and slowly distort. I changed the batteries in it and the same thing continued to happen. I took it to my shop guy who said he thinks its the preamp but isnt 100% sure so I was wondering if any of you guys have had this issue before. I know the pickups tend to go bad pretty fast on these basses so if that the issue? IDK anything helps guys!