My Center 301 Type K is dead, when I used it last it was working perfectly. I put a new battery in and still no life found, I tested the battery with my ZTS Pulse Load tester and it was OK. The recent heavy rain makes my cave quite damp and I think this is the culprit, I opened the 301 and inside it looks very clean so I am at a loss in solving the problem.
Is there an electric string genius who can advise please.