My m21 has almost no output. I've narrowed down to a driver problem. It only puts out 2.4v to the led. I've cleaned the negative rings on the battery side and resoldered the spring and leads for the led. Nothing appears to be burned and all of the solder joints look fine.
Any other ideas or can u guys think of anything to check? I'm having trouble finding a driver that will fit. The factory piece is 27mm and a max height of 6mm. If I have to mod it, I will change it to an XML.
I'm just hoping someone has an idea or maybe seen similar before I start cutting into it.