They are so tight I can’t get them off. I can direct connect a battery to the LED and it lights up just fine. I’m using Efest 35A with button top. I also tried a protected Orbtronic 3400…still no worky.
Try removing tailswitch and using a piece of metal to connect rear of installed (-) battery to bare threads on rear of battery tube.
With the head unscrewed, I can put the positive end of the battery on the driver spring, run a wire from the negative end of the battery to the driver retaining ring and I get light. Bad switch?
Sounds like it.
Sorry, I should have thought of trying different batteries. Mine only works with button tops. Guess I will have to get magnets or solder a button to the tops of the 30Q’s that I have coming.
My wife just brought another package from the post office and it was my second light. It works, put the tail cap from the working light on the non working light and it works. I put the non working tail cap on the working light and it doesn’t work.
It should definitely work with flat tops. Much of the testing was done with those.
I guess this is a good time to ask. Where is a good place to buy some good (omten?) replacement switches?
As long as there is not a driver issue it is an easy fix. Banggood would most certainly take care of that problem but in the meantime and since we know it is the tailcap - possibly the solder on the switch to the pcb?? Don't know..just throwing suggestions.
Aside from the unfortunate issue with the switch..what do you think of it?
I too the tailcap apart but I don’t see any potential issues.
We are waiting for more people to get their lights but in the next day or so there will be a thread posted for a video review contest. The video can be of anything that shows the A6 in operation. There will be four prizes (courtesy of Banggood)
First Prize: Kronos SS/Cu X6/K6 set
Second Prize: Kronos AL X6/K6 set
Third Prize: BLF A6
Fourth Prize: A TK UI T-shirt (yes it is being worked on :))
Speaking of the shirt....someone came up with something to put on the back of a UI shirt but I do not remember what it was. Can anybody help, please?
Also for that have received the BLF A6, keep in mind that it is the exact same driver and UI going in Kronos' group buy. Just imagine what those lights are going to be able to do :)
The light is fantastic, the beam is wonderful, I really like the UI. She’s very bright…
It’s possible you could detect the problem in the tailcap by looking at the parts.
Testing the parts is the next step.
Can you pass current through the bare switch when off? On?
Assemble tailcap. Do you get continuity between metal of cap and spring when clicking switch on?
Put tailcap to light. Do you have continuity between metal of cap and metal of light body.
Something has to show up if you perform the process of elimination.
Mr. DMM is your friend.
Best of luck with your troubleshooting.
I’m not good with stuff like that. I don’t really know how to test the continuity of the switch.
The first question is: Do you have a meter? The rest is easy :)
Yes sir
other way is if you had a battery, wire and a small led or buzzer to make a circuit to see if you works by pushing the switch.
if you were local i could have had a look at it for you for free.
just use the diode test on the meter were it makes a buzzing noise when you connect the leads together.
Something really simple: Sometimes, with threads anodized, the very end of the body tube needs make a good electrical connection with the brass ring that retains the switch. First make sure the brass ring is snugged up to the switch nice and tight. Then make sure the very end of the body tube is shiny bare metal with no spots of anodizing. Maybe run a knife over it to make sure. Screw the tailcap tight and loose a few times while working the switch.
Sometimes, Bingo, it just decides to start working. Hope you get Bingo!
PS: My light is stuck in the black hole of customs in LA. At least you have a light to play with!
If I recall correctly, the BLF EE X6 had some units with tailcap switch issues, and most of them were easily fixed by taking the tailcap apart then putting it back together again (make sure it’s tight).