Tom_E
(Tom E)
750
The GT Micro has a 90 deg board mount switch, so one of the things that can go wrong is the switch tilts back, pulling off the PCB. It's happened to me with other lights, similar switches. This one looks pretty well secured but hard to tell, and hard to tell of the quality of the switch. The GT Micro is not cheap for it's size, so I would expect higher quality.
If it feels like the switch boot has to be pressed harder to make contact, then this may be the problem. I've seen it still function, just harder to press - taken apart, and the switch was tilted back.
GT Micro driver below:


