Apologies if this isn’t the right category for this question. I didn’t see a troubleshooting section and also wasn’t able to find info on my problem using the search function.
Anyway, I have a brand new GT90 with NarsilM v1.3 that I believe might be defective. I have 8 fully charged (measured with multimeter) Samsung 30Q batteries, they are inserted properly into the battery cradles, and the cradles are going into the flashlight tube correctly (white arrow on cradle is pointing toward the driver when installed).
Shortly after turning the light on, the LED will flash 3 times and then begin to step down in brightness. Per the manual, that’s the low battery indicator. If I do 3 clicks from OFF to get batt check, it will give me two blinks, a pause, then 8 blinks - 2.8V. I’m kind of at my wit’s end here because I’ve measured the voltage of the cradles independently as well as stacked together outside the light. In every case, they measure about 4.13V.
I’ve tried factory resetting the light but no luck. I’m still having the same issue. The batteries are all seated - nothing rattling around or anything like that. I’ve posted some photos below of my measurements as well as the orientation of the batteries in the cradle.
From what I can tell, everything else works properly. I can ramp up/down, lockout, access turbo, moonlight, etc. If I ramp up to about 20% brightness, it will flash three times and then start stepping down to almost a moonlight level. It just seem like the light thinks it’s not getting enough voltage but I’m sure it is…
I would try to check these but I’m not sure how the driver comes out and I wouldn’t want to jeopardize my chance of returning it. I do have snap ring pliers and I’ve removed drivers before, but on a light this expensive it just makes me nervous.
You could ask for a replacement driver, but opening the head is a mission and a half. You’d need two rubber strap wrenches, or one and a vice. I purchased the original with XHP35 HI, then swapped to the XHP70.2 and again to the SBT90.2
Yeah, I looked at a few posts that showed how the light came apart and realized it wasn’t going to be easy. The rubber strap wrenches also came to mind. I’ll admit I just don’t know enough yet about drivers and such to want to take on this task. I could get it apart, but would need quite a bit of troubleshooting help for the driver issue. I emailed Illumination Supply about the issue and I’m still waiting for a response.
I hope (eh. assume) Illumn will take some action for a malfunctioning light of €359.-.
For so much money I would not expect them to send a new driver, but a new light.
What if you get a new driver and things stay as bad as they are?
If they keep playing “schtum”, file a PP complaint. Because you paid serious money.
My thoughts exactly. And I don’t have the right tools to take the light apart nor am I willing to do it. I’m 100% confident that I’ve done nothing wrong and I think a replacement light should be in order. We’ll see how it turns out.