MF DA1 here, wire came loose from driver and not sure where it attaches. Just ordered a DX driver to see if I can get it working again.
Wanna sell the F-15? It's a nice light when it works, but if I try to run a battery much over 4.05 V. it shuts off. I suspect the driver is not good. If it takes any common sized driver, that would be a good swap. But, anyway, a co-worker of mine expressed an interest; if you want to dump it, let's talk.
I ordered a 2.8A, 3-mode driver for it from shiningbeam
When that gets here, it should be better-than-new!