I purchased an mvp 3.0 pro for my wife about 3 months ago and she loved it just as she did her 2.0. By love I of course mean dropped and continually knocked over, daily. Love her to death but she's the clumsiest person I've ever met. Any way, the 3 didn't take abuse as well as the 2 and has stopped firing. Screen still works, Reads ohms of her rta, puff timer works. Everything is in working order aside from not firing. Yes, I have tried other toppers and same issue occurs. Anyone have any advice on diagnosis of symptoms. Maybe some insight on fixing. Any help is appreciated.