Yep, that’s an odd one. I don’t know much about it.
On one hand it says it uses a FET+7+1 driver and Anduril. That is normal for the FW3A.
On the other hand it says the firmware is: lume1 - FW3X Constant Current Buck-Boost
I’m going to guess that the Buck-Boost circuit is probably going to be built into the auxiliary board for the auxiliary LEDs. I really don’t know.
The stock driver uses the Attiny 85 MCU which has 4 pwm outputs (on the FW3A driver), but I don’t think it can control multicolor aux leds. 3 of those outputs are for the 3 channels which only leaves one other channel free. I don’t think a single output channel is enough. I’m not sure. Does anyone know?
I do know that other Anduril lights that use factory multicolor leds use the Attiny1634 MCU which has way more outputs.
I have not been on the forum much so maybe there have been changes to the FW3A driver? Did it switch to a 1634 or still the original one?
Back to MJB83, on a stock light I would say your symptoms sound like both the 7135 channels (1 & 2) stopped working and only the 3rd channel (FET) is working. With a stock ceiling level, only channels 1 and 2 are active. This would explain why you can’t ramp up or down and only a double click works. The double click of course is what activates the FET to give turbo output.
I’m hesitant to say that’s your problem, though because it’s rare for two channels to go out at the same time for no reason. Plus you’ve also got the auxiliary board which adds extra complication. I would definitely contact the store you bought it from if none of our suggestions fix it.
Here is a picture of a flat top battery. Note that the positive end does not stick up.
Does yours look like that or do you have the type where the tip is raised and sticks up higher? If it’s raised (button top), then it might be a tiny bit too long. Just a fraction of a millimeter can cause erratic behavior. I was originally using a Samsung 30Q with a button top that worked, but occasionally would make it act funny. I had to remove the button, or swap to a flat top, and it fixed all my issues.