Got this Astrolux S41S (quad-Nichia 219C) to check out, I think it may be a driver problem?
Normally, it uses the BLF A6 driver, which defaults to 7 brightness levels:
Moon-Low-Med1-Med2-High1-High2-Turbo
In this particular Astrolux S41S,
clicking once to Moon will have no light at all (I think I got 0.002A -- maybe that's too low to power up the quad-Nichia?)
the next press (Low) has light,
another press goes to Med1, but Low and Med1 are the exact same brightness (I also double-checked with the tailcap current, same current)
Med2-High1-High2-Turbo seems to function normally though.
So, the problem is:
- no light output in Lowest (Moon) mode
- the 2nd & 3rd brightness levels are exactly the same brightness
Then the special modes,
so from "Moon" (where there's no light), a long-press goes to Turbo (OK), then another long-press goes to Strobe (OK), and another long-press goes to BattCheck mode.
The BattCheck mode does not output any light at all (note: the battery is freshly charged), then another long press goes to Bike Flash (OK).
So, the other problem is that BattCheck does not light up.
Then the Configuration mode:
I half-pressed many times to go to the BLF A6 configuration mode (it should "buzz", like in an Astrolux S1 which I also own).
There's no "buzz" and no light at all.
So 3 problems with this Astrolux S41S. Any idea what might be the problem? Driver issue?