BLF A6 FET+7135 Light Troubleshooting and Mod thread

Could the OP update the 1st post with re-uploaded images?

He hasn't logged in for almost five months.

You might have a better chance if you PM him.

Sorry if this is not the perfect thread for this question. I did not want to open another one for it.

Where can I buy this part for the BLF A6? It’s part of the lanyard (I hope that’s the correct term):

Or what would you do/buy to fix it?

You can change the thread.
There is a knot inside the plastic piece.

Yes, it appears that it is a string of nylon wrapped in this black fabric. So I’d have to get something with similar (or preferably better) durability. Hmmm…

Or maybe there are good replacement lanyards that are quite cheap? It’s probably easier to find for someone like me! :blush:

BTW, this is the second time this happened in a couple months (for my 2 BLF’s).

I would assume you can find many lanyards at the Chinese sites, Banggood, Ali, Fasttech, etc. You have to decide if you think there is any risk buying there though, with all that is going on in the world right now. Maybe just Google flashlight lanyard, I’m sure many will come up, cheap.

Look at Kevlar or Dyneema cord. They’re both very abrasion resistant. In the US, 15m runs about $12.

Strangely enough, I had already done that, but since I live in Germany, using the German equivalent. Found nothing useful. Did it again, using the English term - found everything I could ask for! In German stores!

Thanks!

Thanks for the tip!

Oh dang tinypic is gone…. I’m sorry!! Any suggestions?

My A6 has been working great for years but recently it’s started acting up.
When i turn it on the beam is bright for a few seconds, than goes to a lower mode within seconds and turns off a few seconds after that.
Cycling through modes i cant tell which mode i am in except for the nigh mode. All other modes seem equal in brightness which is very low compared to what it used to be.

Any idea what it could be?

Mostly dead battery?

Fully charged Panasonic

Maybe check that the retaining rings are tight. Battery tube is tight.
(When troubleshooting start with the easy thing first)

I have unscrewed and tightened them many times but it didn’t help.
Problem is gone now though. Switched to a high-current battery (Samsung Q30) and after a turning off & on the flashlight a few times it started working all of a sudden. No idea why & how.

My BLF A6 is acting weird, Its working but you have to do a Full and half a click to turn in ON,
Mode memory is OFF, and it should go to Moonlight, L…Turbo,

When I turn it on - nothing, but after another half click I get some light, .
I changed the battery, I use Sanyos, but I tried a Samsung 30Q and same story, although the Turbo gets really bright

from OFF,
Full click does nothing, no light even in the darkest room.
Another Half click will turn it ON in Low,
another half click goes to Medium, Medium2, High1,High 2… Turbo.

Even with a 30Q battery it will turn on with no light
Or maybe it is missing the Moonlight?

Does moonlight function if you cycle to it normally? If you use memory and switch it on in another level, does it work without needing to do a half press?

Actually not at all. If I cycle from Turbo to next, light just turns off.
If I cycle down or backwards with long half press, same thing, there is no visible output.

Interesting the battery check is missing too
Going down past “Moonlight” which is basicaly OFF, gives me Strobe-OFF-Bike Flasher-OFF-Turbo-OFF-Turbo. Seems like every other mode going down is just OFF, and then Turbo keeps coming back all the time,

I have to figure out how to turn memory on

I did some more testing with A6. So Full click gives you OFF, another Full click is OFF again,
so I can keep full clicking forever and I only get OFF.

So I thought maybe the switch is no good. so I unscrewed tail switch, and just connect the battery to the body,
I got nothing just OFF…
I disconnected the battery and connected it again, I got LOW
disconnect and connect again I got MED
…again I got MED2
…again I got High
…again I got High2
…Turbo

Battery is fully charged
So there is nothing wrong with the switch and it must be the driver. right?

Sounds like a bad 7135 chip on the driver. It could be a fluke, or they could have swapped the part for another brand. The moon level is very sensitive to changes in the underlying hardware.

If battcheck doesn’t work though, it’s probably just a fluke, because even the cheapest 7135 chips should be able to do that.