So, a friend at work has one of these, but he bought it from (i think anyway) a somewhat sketchy vendor locally. Without an atty on it, it will burn the battery and turn scorching hot, without even looking at the button. He's taken it apart and tested it with a multimeter but can't figure out why or how to fix it. We looked at it today and tried a different battery in it (again, no atty connected, and not even touching the fire button), and again it sizzled up within seconds.
Any ideas?
Any ideas?