My B2000 is less than two years old, and hasn't been gigged at all - so I was shocked to have it suddenly spew smoke and sparks when it hadn't even been playing. I opened it up, and the SL22 thermistor had blown. That's just a $1 component, but what would make it go out? The only thing I can think of is an external transient, and I didn't see any other signs of that. If that's all that's wrong it should be simple to get repaired - but is it?? I love the B2000's design, and was thinking about getting a second one, but this worrying.