BLF A6 FET+7135 Light Troubleshooting and Mod thread

Hi guys, I got 10 new raptor claw 7135’s in the mail today and after having replaced the one that was on the driver I now only have full (turbo) brightness. Nothing in between. Anything in specific I can take a look at? Is there a schematic available for this driver?

short between LED- and GND somewhere

less possible short between batt+ and FET gate

There is indeed a short, the black wire is directly connected to the ground outer circle somehow. Can quite see where though. Currently googling like a madman trying to find a board file so that I can try to figure this out.

Edit: nevermind, found the short. The FET seems to be shorted out. Going to see if I can find a replacement FET locally, otherwise I might as well just order a new driver from BG (unless there’s a more reputable source out there?).

Here partial gold pcb was detached from driver after my cousin pull up the spring

I have tried to resolder the spring on the part of pcb that was intact.
The Driver shake on their room,this pill is from cometa 2016…
I added 17 to 18mm ring adapter press fit and it raised up

I thinked that the Ground contact was too bad
Outside I pressed and solder 0.5mm unipolar copper wire to increase the ground and fill the gap between the pill and driver

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?