Hi folks,
I bought a brass UltraTac K18 from a HK-based seller of flashlight Equipment. When it arrived, it didn’t work. I used alkalines, rechargeables, and 10440 cells. I tried single click, double clicks, and long clicks. None made a difference.
I emailed the seller who sent a replacement. This one doesn’t work 95% of the time, ie. no light when the button is pressed. The other 5% of the time when it does work, the light is flickering especially on med & high modes. If I switch it off, there is a high chance the flashlight won’t work the next time I try to switch it on.
I’ve emailed the seller for a refund if I return both flashlights.
I’m beginning to think I’ve overlooked something. Have I? Maybe you can help, please.
Thanks for reading 
stretch the spring in the tail???
This solved the problem with the replacement flashlight. The first one is still as dead as a dodo. For now at least, one is working as it should be, and I’m happy with that
very happy it led to a partial solution for you
the flickering indicated to me a possible connection issue which I’ve had before on a copper A01
I have/had 4/6 of these lil K18 powerhouse midgets
I had one SS arrive DOA and had it replaced promptly
the rest are brass, which all butt one I removed the lacquer from to promote the patina
I like antique (suits my persona)
One I killed entirely by leaving it in acetone overnight(lazy)
DON’T EVER DO THAT!
it dissolved the switch cover and who knows what all plastic parts inside
Maybe you can help me too. I have the opposite problem.
I got an Ultratec K18 and it was great for a week. Now it won’t shut off. I unscrew it and of course it goes off, but as soon as I go to put it back together it lights up as soon as the head and body make contact. Once assembled, no pattern of switch clicks will get it to shut off:(
Repeated “contact us” attempts to get a an answer have been answered with dead silence!
Customer service?? NOT
Dennis
I have not run into that problem, yet.
If the contact area in the head is clean, then I’d guess a faulty switch.
Did you contact the seller? Luckily, the one DOA I had was purchased in the USA and they, (Going Gear), made good on it.
Someone on here tore one of these apart and modded the shit out of it. IIRC, the switch was a bitch to get out and was replaced.
I did the eraser trick on the inside of the head and the bottom of the battery to no avail.
Unfortunately, my light came from Hong Kong and I’m waiting for a reply from the vendor,
According to this:
http://budgetlightforum.com/comment/848883#comment-848883
it should be relatively easy to remove the pill (use a pair of tweezers in the slots on each side and unscrew). If you can get that out, then you can maybe look for shorts or something?
I’ll wait to hear from the place I bought it from before I dive in looking for a short. Thanks for the link.
Dennis
here is the thread where the guy dismantles a brass K18
http://budgetlightforum.com/node/47493
Thanks chinooker.
I’ve been notified by the seller in Hong Kong that they are sending me a replacement. Hopefully they do, it works and it lasts more than a week.
Thanks for your help guys,
Dennis O’Brien