Q8, PMS SEND TO THOSE WITH ISSUES BLF soda can light

It seems like they should cut the o-ring groove just the tiniest bit deeper. You could probably take a hacksaw blade and gently go around the groove and remove just the tiniest bit. Maybe just removing the black finish is enough. The head only needs to squish the o-ring a tiny bit to form a waterproof seal. Iā€™m guessing itā€™s squishing it too much.

Let that hacksaw solution be your very last resort. :smiley:

Something has changed or is out of whack with yours. None of mine do that.

Is your o-ring in the position shirnask pointed out in his picture??

Yes.

And the o ring squeeze out thru that groove perpendicular to the o ring. All my 3 Q8 are doing it. Im thinking maybe they use slightly bigger o ring this time. Just my thought :weary: Just biught it from BG US warehouse.

Well then the fasttech O rings are probably the best ansewer.

Hopefully, it is. If not; I fear the the last resort: hack saw :person_facepalming: I hate to mutilate a beautiful and perfect light :frowning:

Mutilate? It is just a poor manā€™s CNC machine. Lol
Add a little black marker to hide the raw aluminum and you wonā€™t even know. Plus itā€™s completely covered by the head when together, which is 99.9% of the time.

A needle file might make a smoother cut, but not everyone has them.

All the control modes and functions are focused on a single switch, and I'm worried about how long it will last with a high lifetime of frequent clicks

You can get a replacement switch assembly from the Sofirn store on AliExpress for about $2.98

Yepā€¦ here is a link in fact. Go ahead & get you a spare or two while the getting is good. I sure didā€¦. :wink:
$3.01 is the latest price it seems.

https://m.aliexpress.com/item/32879434650.html?trace=storeDetail2msiteDetail

By the time the switch would wear out there would be a whole new Next Level of Technology flashlights. Lol

Iā€™m pretty sure the switches are the usual cheap ones and I replaced a couple of them in different lights meanwhile (not Q8 up to now).

Just received my Q8 via Amazon AU. Oring problem here too. Reapply grease to no avail. Has fasttech orings helped?

They worked just fine to replace the damaged O ring on one of my Q8s - but the original worked well until I messed it up :person_facepalming:

If the problem is not the grove that the O ring sits in they should fix your problem

Did anyone else notice the AR glass is actually a bit thick? The non-AR glass is 2.85mm and allows the bezel to sit mostly flush, but the AR version is almost 3.1mm and leaves a noticeable gap behind the bezel. Output difference is about 4.5% for me.

So after a year of usage my backlight to the button decided to crap out.
Recently it was mostly dead as it was just flickering and getting dim but if the flashlight was activated and turned off or the batteries pulled and closed then it came back.
Now its just dead, dead dead. No green light whatsoever no matter what I do.
Other than that it working without any issues, and ultimately doesnā€™t bother me much but if I can fix it I would.
I have taken apart the flashlight and saw the basic things like wires are attached nothing appears to be rattling, but havenā€™t completely torn it down

Any one have any idea what should I look for? Burned out diodes or resistors? and where?
Or can I purchase the button assembly and just replace the whole thing?

The fault seems to be inside the pcb, itā€™s unfixable. The only way to correct it is to replace it.

Still in need of a replacement. I have not had a working beacon since about 3 weeks from purchase. Responded to the PM with my full address, and never received a response. That was on 11/5/2017ā€¦

Interesting. I would have not expect PCB issues at that low of a voltage and current.
Well if there is a way of purchasing replacements then let me know where.
Otherwise Iā€™ll live with it

Here are the replacement parts.

Driver PCB:
https://www.aliexpress.com/item/BLF-Q8-Driver-Chip-Q8-Circuit-Board/32867355375.html?spm=2114.search0104.3.2.2f6750fezazRs6&ws_ab_test=searchweb0_0,searchweb201602_1_10152_10151_10065_10344_10130_10068_10547_10342_10343_10340_10548_10341_10696_10084_10083_10618_10139_10307_10059_100031_10103_10624_10623_10622_10621_10620,searchweb201603_6,ppcSwitch_5&algo_expid=474edbba-3c2d-438c-8e2f-27eab16f5339-0&algo_pvid=474edbba-3c2d-438c-8e2f-27eab16f5339&priceBeautifyAB=0

Button PCB (the one you want to fix):
https://www.aliexpress.com/item/BLF-Q8-Accessories-lighted-switch-assembly-Copper-DTP-MCPCB-Reflector-for-Q8/32879434650.html?spm=2114.search0104.3.11.2f6750fezazRs6&ws_ab_test=searchweb0_0,searchweb201602_1_10152_10151_10065_10344_10130_10068_10547_10342_10343_10340_10548_10341_10696_10084_10083_10618_10139_10307_10059_100031_10103_10624_10623_10622_10621_10620,searchweb201603_6,ppcSwitch_5&algo_expid=474edbba-3c2d-438c-8e2f-27eab16f5339-1&algo_pvid=474edbba-3c2d-438c-8e2f-27eab16f5339&priceBeautifyAB=0