BLF A6 FET+7135 Light Troubleshooting and Mod thread

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saldot
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Fully charged Panasonic

Nooner
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saldot wrote:
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?

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

saldot
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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.

caramba
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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?

Funtastic
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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?

Texas Ace Lumen Tube calibrated with maukka lights

New Zealand store – https://www.piercingthedarkness.co.nz (NZ customers only)

YouTube channel – https://www.youtube.com/channel/UCIUWi2vYp4CWrRkOJM70t_w/videos (Demos for my customers, and reviews)

caramba
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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

caramba
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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?

ToyKeeper
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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.

raccoon city
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Post #1000!

(at the moment.)

Funtastic
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If you know how to solder in a new driver they’re on Banggood.com

Texas Ace Lumen Tube calibrated with maukka lights

New Zealand store – https://www.piercingthedarkness.co.nz (NZ customers only)

YouTube channel – https://www.youtube.com/channel/UCIUWi2vYp4CWrRkOJM70t_w/videos (Demos for my customers, and reviews)

caramba
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ToyKeeper wrote:
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.

Thank you Toykeeper for bringing some light to it, although I am embarrassed because I can’t figure out what fluke are you referring to.
I am a little bit familiar with the Fluke brand. Facepalm
I think that’s all I could associate with the term fluke. Sorry Facepalm

raccoon city
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fluke:

an unlikely chance occurrence, especially a surprising piece of luck.

caramba
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raccoon city wrote:

fluke:


an unlikely chance occurrence, especially a surprising piece of luck.

Thanks, racoon city, so basically I won the lottery? Love

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