Yes to what TA said. The emitter, battery and switch all look good. It seems to be driver related. I typically mess around with the driver retaining ring on lights that have “an issue” and sometimes that fixes it.
In your video I think I see the slight blink indicating the top of the ramp even though it’s not at the 2A rate.
If this where a Q8 driver with a single 7135 and FET, I’d say the FET channel wasn’t working. This is a buck driver, though so I don’t know exactly how it’s channels are divided. So I will leave all that to TA.
The fact that it was working fine and now it does this, kind of makes me think something on the driver got fried or a component came loose.
Now I have removed the retaining ring and put it back several times. I have also looked for burnt components and bad soldering, but all seems fine, but the problem remains.
My best guess is that a replacement driver will fix your problems. Have you ever replaced a driver before? You already know how to remove the driver, it’s just a matter of soldiering 5 wires to install a new one.
This is the cheaper fix for lumintop and the one I’m sure they would prefer. Otherwise they may have to ship out that entire middle section of the light which costs a lot more and probably takes longer to ship.
I have not replaced a driver in a flashlight before, but I have quite good soldering skills, so I can’t see any problems (except for the short wires) doing it.
Now that I think about the pictures Neal posted a long time ago, the drivers already come with the switch soldered in place. Once you loosen the switch retaining ring, there are notches that allow the switch to slip through the hole quite easily.
So it’s really just the two emitter wires that need to be soldered.
It was not the last I checked as it is very hard to ship them without them breaking. If you are in the US, there is a place that makes custom sized lenses for a reasonable price. I forgot the name though. Maybe someone else knows?
Not ideal but you could try a 12V power supply, amps should not really matter for the second you will actually use it. Just be careful to get the polarity right, it will kill the LEd if you get it backwards.
I would just manually put voltage to the LED / LED wires to ensure that the LED is not the problem. There is a small chance it could of died, I have seen them act kind of like this but it is very rare.
You can contact Neal about it, he should be able get you a replacement since yours is damaged. I have tried to get them to offer the lenses for sale to the public but they said shipping was too hard for that.
By the way, I noticed that in the specs post at the beginning of this thread there is no specified diameter for the GT lens, can someone update that information please?
Thanks!
I found this glass that might fit the GT (Not sure about the size)
I plan to eventually replace the glass lens for a polycarbonate lens (cut out a round from a sheet from the DIY shop). Close to the same light transmission (when it is new at least ) and no need to be careful with the GT after that
) and no need to be careful with the GT after that