My wife’s NiteCore tube stopped working. I suspected dead battery, but when plugged into a charger it showed as fully charged, but no response when the power button was clicked.
My son and I disassembled it, and found the positive wire from the battery had broken at the point where it attached to the circuit board.
I carefully stripped the wire back and soldered it into place (using my 10x jewelers magnifier hood and my Reylight Tool Ti as illumination), and celebration – it worked again.
Reassembled and good as new!
I still haven’t gotten the hang of getting out the camera first, but tried to get at least a couple of images.
Moral of story? Sometimes the fix is EASY!