The symptom is that no matter which batteries I use, clicking the on button causes the LED to flash slightly, but not come on.
The battery holder, even though it's the old type that sucks, is still working okay with a good voltage between live parts. The tailcap is brand new thanks to Fenixs' awesome customer service (free replacement!) and worked for a few weeks.
Using battery clips I can bypass the tail switch anyway and apply 5V ish to the head and get the same flash, but not come on.
The battery holder, even though it's the old type that sucks, is still working okay with a good voltage between live parts. The tailcap is brand new thanks to Fenixs' awesome customer service (free replacement!) and worked for a few weeks.
Using battery clips I can bypass the tail switch anyway and apply 5V ish to the head and get the same flash, but not come on.
