I got an eye10 in parts, I tried to put it back together but the driver misbehaved. Turning the control ring resulted in some kind of instant on or couple of flashes or strobe mode.
Disassemble and reassemble a couple times, check battery, check continuity through battery tube etc…
Decide that the magnets are incorrectly positioned in the control ring. Start playing around with magnetic polarity. Seems like I find a working position. Assemble - low to high takes a quarter of the ring travel. Remaining 75% does nothing.
More screwing around. I even used stronger external magnets only to get a non response.
Sounds like it might be cactus.
You can get the driver from Jetbeam. I have ordered several for backups and it’s nice to update RRT-01 and TCR-1 drivers to have the strobe and sos modes.