BLF A6 FET+7135 Light Troubleshooting and Mod thread

989 posts / 0 new
Last post
d_t_a
Offline
Last seen: 3 hours 28 min ago
Joined: 08/04/2017 - 23:58
Posts: 1608
Location: Manila, Philippines

Espresso wrote:
Hi all, new here and still a relative noobie with the A6.

Seems I’m also experiencing the same issue with being unable to access the configuration menu with 15+ taps. The light simply keeps on cycling through the levels until it settles on moonlight after repeated taps but no blinking into configuration.

So far I’m liking it much, except I’d really like to enter the configuration mode to tur on memory mode like I have on my others like my Thorfire C8s.

This is a stock BLF Special Edition A6 from Banggood, no tweaks, no mods. Any ideas? Defective?

After 15+ half-presses (flashlight must be in the ON state first), the flashlight should enter into Configuration Mode, which is signified by Blink-Blink, pause, Blink-Blink. I think the Blink-Blink is not that bright, so you may have to shine it on a wall to identify the Blink-Blink.

To change the setting, you need to Turn OFF the flashlight (fully-click the button) in between the “Blink-Blink”, ie. don’t wait for the second Blink in each pair of Blink.

WalkIntoTheLight
Offline
Last seen: 2 months 1 week ago
Joined: 12/05/2015 - 10:26
Posts: 2153
Location: Canada

d_t_a wrote:
Espresso wrote:
Hi all, new here and still a relative noobie with the A6.

Seems I’m also experiencing the same issue with being unable to access the configuration menu with 15+ taps. The light simply keeps on cycling through the levels until it settles on moonlight after repeated taps but no blinking into configuration.

So far I’m liking it much, except I’d really like to enter the configuration mode to tur on memory mode like I have on my others like my Thorfire C8s.

This is a stock BLF Special Edition A6 from Banggood, no tweaks, no mods. Any ideas? Defective?

After 15+ half-presses (flashlight must be in the ON state first), the flashlight should enter into Configuration Mode, which is signified by Blink-Blink, pause, Blink-Blink. I think the Blink-Blink is not that bright, so you may have to shine it on a wall to identify the Blink-Blink.

To change the setting, you need to Turn OFF the flashlight (fully-click the button) in between the “Blink-Blink”, ie. don’t wait for the second Blink in each pair of Blink.

It sounds more complicated than it is. Here’s a video showing how to do it. Go to the 9 minute and 40 second mark to see the programming function. (Yes, it’s for the Astrolux C8, but it has the exact same driver as the BLF A6.)

Espresso
Offline
Last seen: 4 months 1 week ago
Joined: 01/31/2019 - 22:34
Posts: 12
Location: Montreal, Canada

Thanks to you both for your help, much appreciated. No luck yet but I’ll keep trying!

If it’s not the UI then it must be the user! Wink Big Smile

Great review of the Astrolux C8 btw!

PrettyDim
PrettyDim's picture
Offline
Last seen: 3 weeks 4 days ago
Joined: 02/04/2019 - 10:03
Posts: 4

Forgive my stupidity but what order does the o ring, glass and reflector go in?

Is it o ring, glass then reflector or glass first?

DOC1500
DOC1500's picture
Offline
Last seen: 3 months 2 weeks ago
Joined: 01/19/2019 - 10:18
Posts: 98
Location: Clarks Summit, Pennsylvania

I found something better than an A6.
6-A6’s..
3 black 3 non anodized.
I love this light.!!!

A lie is a lie even if everybody believes it.. The truth is the truth even if nobody believes it.
John 3:16 --
2 Cor 5:17

C.44
Offline
Last seen: 9 months 1 week ago
Joined: 08/20/2017 - 17:08
Posts: 7
Location: Germany

Having the exact same problem with an A6 I bought on Banggood just last week. It just got here and I can’t for the life of me get it into config. Mind you, I already have an A6 which I can get into config just fine. There are a few things amiss apparently. The light seems to be stuck in Group 2, but with a slight variation. Instead of low-mid-high-turbo it appears to do low-low (or mid – mid) – high – turbo. The first two brightness levels are identical.

Trying to get into config results in the constant mid or low (whichever it is), it will not blink twice.

Same thing happens when I go backwards from the lowest brightness to turbo, then flasher and then battery check. There is no battery check, instead it just stays on in low / mid mode, similar to config. I’ve looked at the controller pcb and I can’t see any clear signs of solder blobs where they shouldn’t be, it looks to be neatly soldered.

Any hints as to what this could mean? I’m leaning towards dud to be honest…

ToyKeeper
ToyKeeper's picture
Offline
Last seen: 3 hours 1 min ago
Joined: 01/12/2013 - 14:40
Posts: 10241
Location: (469219) 2016 HO3
C.44 wrote:
Any hints as to what this could mean? I’m leaning towards dud to be honest…

Sounds like it has a damaged driver. The 7135 chip doesn’t seem to work.

C.44
Offline
Last seen: 9 months 1 week ago
Joined: 08/20/2017 - 17:08
Posts: 7
Location: Germany
ToyKeeper wrote:
C.44 wrote:
Any hints as to what this could mean? I’m leaning towards dud to be honest…

Sounds like it has a damaged driver. The 7135 chip doesn’t seem to work.

Reading the previous page, that seems to be the general consensus indeed. This particular A6 comes from the EU warehouse so I’m wondering if that means that the entire batch of A6’s they have there are compromised since I’m apparently not the only one with this issue.

C.44
Offline
Last seen: 9 months 1 week ago
Joined: 08/20/2017 - 17:08
Posts: 7
Location: Germany

So I got in touch with Banggood’s aftersales and they are treating it as a manufacturing defect and are refunding the light. I’ve asked them if their entire batch of A6’s is likely to have this issue, but I’m still waiting to hear back from them. That leaves me with an A6 that needs some TLC. Anyone know where I can pick up a 7135? I’ve looked at Arrow, Farnell, TME and LCSC but haven’t found any yet.

ToyKeeper
ToyKeeper's picture
Offline
Last seen: 3 hours 1 min ago
Joined: 01/12/2013 - 14:40
Posts: 10241
Location: (469219) 2016 HO3

It’s an amc7135 chip, 350mA. Specifically, it should be a raptor-claw brand. I don’t know the name, but that’s the logo it has on the chip. Not a sailboat logo. Stores which sell flashlight drivers might have some, but you might have to buy an entire driver to get the parts. I’m not sure where to get them individually in the EU.

shirnask
shirnask's picture
Online
Last seen: 10 min 57 sec ago
Joined: 03/21/2016 - 23:58
Posts: 1179
Location: Louisiana
C.44
Offline
Last seen: 9 months 1 week ago
Joined: 08/20/2017 - 17:08
Posts: 7
Location: Germany
ToyKeeper wrote:
It’s an amc7135 chip, 350mA. Specifically, it should be a raptor-claw brand. I don’t know the name, but that’s the logo it has on the chip. Not a sailboat logo. Stores which sell flashlight drivers might have some, but you might have to buy an entire driver to get the parts. I’m not sure where to get them individually in the EU.

I just figured out that the AMC7135 with the raptor claw / rainbow thingy is the MEL7135PG from “Nanjing Micro One Elec”. I found it on LCSC: https://lcsc.com/product-detail/LED-Drivers_MEL7135PG_C80214.html

I’m currently working on putting an order together (unrelated to flashlights) for LCSC / JLCPCB so I’ll pick up 5 or 10 from them. I did search eBay for a bit and there are some 7135s to be found in europe (supposedly) but none of them with the raptor claw, some even use generic SOT89 3d models as the product image. I have good experiences with LCSC so that’ll be the way to go I think.

shirnask wrote:
Astrolux S1/BLF A6 driver at banggood

https://www.banggood.com/Astrolux-S1-BLF-A6-A17DD-L-FET-1-2_8-4_35v-7-4-Modes-Flashlight-Driver-p-1009980.html?rmmds=search&cur_warehouse=CN

I thought about that too. However I currently have another order I’m waiting on from BG and it’s taking forever to even ship the thing out. Plus, right now I’m not too confident in BG’s A6 drivers.

ToyKeeper
ToyKeeper's picture
Offline
Last seen: 3 hours 1 min ago
Joined: 01/12/2013 - 14:40
Posts: 10241
Location: (469219) 2016 HO3

Technically, any 7135 chip should work… but people have generally found the raptor-claw ones have relatively fast rise and fall times so they work a bit better with PWM. They’re not the only type which responds well, but out of the ones which are suitable, they’re the easiest to identify.

C.44
Offline
Last seen: 9 months 1 week ago
Joined: 08/20/2017 - 17:08
Posts: 7
Location: Germany
ToyKeeper wrote:
Technically, any 7135 chip should work… but people have generally found the raptor-claw ones have relatively fast rise and fall times so they work a bit better with PWM. They’re not the only type which responds well, but out of the ones which are suitable, they’re the easiest to identify.

True, technically they should be near identical. I remember reading a thread about an out of spec 7135 that had issues with lower pwm duty cycles. The real issue with ordering stuff from eBay or AliExpress is that sellers often list all the names the 7135’s go by in one listing, without ever clarifying which one you’re buying.

For instance: 10pcs SMD AMC7135PKFAT MEL7135PG L7135 SOT-89 LED Driver IC

This seller uses the raptor claw 7135 as the main image, and obviously you hope that that is exactly what you get, but you may just end up with an L7135 (which supposedly has problems with lower pwm duty cycles).

Personally I’d rather buy from LCSC where you know exactly what you’re ordering. Shipping still takes a long time, but at least you end up with what you ordered Wink

C.44
Offline
Last seen: 9 months 1 week ago
Joined: 08/20/2017 - 17:08
Posts: 7
Location: Germany

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?

Lexel
Lexel's picture
Offline
Last seen: 8 hours 25 min ago
Joined: 11/01/2016 - 08:00
Posts: 5813
Location: Germany

short between LED- and GND somewhere

less possible short between batt+ and FET gate

C.44
Offline
Last seen: 9 months 1 week ago
Joined: 08/20/2017 - 17:08
Posts: 7
Location: Germany

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?).

Alen
Offline
Last seen: 1 day 7 hours ago
Joined: 04/03/2012 - 08:26
Posts: 319
Location: Italy

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

dee-u
Offline
Last seen: 4 months 3 weeks ago
Joined: 11/04/2019 - 21:32
Posts: 6

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

raccoon city
raccoon city's picture
Online
Last seen: 1 min 23 sec ago
Joined: 10/06/2010 - 02:35
Posts: 14218
Location: रॅकून सिटी Palm Desert CA USA

dee-u wrote:

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.  ;)

beachdrifter
Offline
Last seen: 1 week 5 days ago
Joined: 01/24/2019 - 16:02
Posts: 9
Location: Germany

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?

Unloco
Offline
Last seen: 2 hours 31 min ago
Joined: 01/27/2018 - 16:17
Posts: 383

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

beachdrifter
Offline
Last seen: 1 week 5 days ago
Joined: 01/24/2019 - 16:02
Posts: 9
Location: Germany

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! Blushing

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

cabfrank
Offline
Last seen: 5 hours 47 min ago
Joined: 11/19/2010 - 17:25
Posts: 3014
Location: healdsburg, california usa earth

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.

Photonica
Photonica's picture
Offline
Last seen: 2 days 16 hours ago
Joined: 09/20/2019 - 10:10
Posts: 336
Location: Midwest USA

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

More Photons!

beachdrifter
Offline
Last seen: 1 week 5 days ago
Joined: 01/24/2019 - 16:02
Posts: 9
Location: Germany
cabfrank wrote:
Maybe just Google flashlight lanyard, I’m sure many will come up, cheap.

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!

beachdrifter
Offline
Last seen: 1 week 5 days ago
Joined: 01/24/2019 - 16:02
Posts: 9
Location: Germany
Photonica wrote:
Look at Kevlar or Dyneema cord. They’re both very abrasion resistant. In the US, 15m runs about $12.

Thanks for the tip!

dudunphy
dudunphy's picture
Offline
Last seen: 2 weeks 13 hours ago
Joined: 07/28/2015 - 12:22
Posts: 406
Location: Colorado

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

Dustin

Pages