BLF GT official support thread [FAQ updated 11 Jan 2018]

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JasonWW
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Oh how I know that “node 50303” so well. Lol

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices

FlashPilot
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After tearing up several cheap plastic strap wrenches (Sears, northern tool, harborfreight, ebay, etc…) I received a great tip from TomE to try out the BOA BO13010 Constrictor Aluminum Strap Wrenches. Available through Amazon and other places. I lend mine out frequently, and they have paid for themselves 100 fold over the past 4 years that they have been abused. Also great for many other uses around the shop.

Thanks again TomE!

netprince
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Has anyone else noticed any bad parasitic drain?

I charged up all my cells just before I got my GT, I used it a little to show off and what not, then it has been off ever since. Got it out today and it wouldn’t ramp up past about half way. Put the cells on the charger and they are almost completely flat… Its only been a little over a month…

Texas_Ace
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netprince wrote:
Has anyone else noticed any bad parasitic drain?

I charged up all my cells just before I got my GT, I used it a little to show off and what not, then it has been off ever since. Got it out today and it wouldn’t ramp up past about half way. Put the cells on the charger and they are almost completely flat… Its only been a little over a month…

That is much faster then it should be but this light does have some parasitic drain. I think I measured around 250-300ua (0.25-0.3ma) IIRC.

It should last around 1.5 years with 3500ma cells IIRC.

Maybe you just used it more then you thought?

netprince
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Texas_Ace wrote:
netprince wrote:
Has anyone else noticed any bad parasitic drain?

I charged up all my cells just before I got my GT, I used it a little to show off and what not, then it has been off ever since. Got it out today and it wouldn’t ramp up past about half way. Put the cells on the charger and they are almost completely flat… Its only been a little over a month…

That is much faster then it should be but this light does have some parasitic drain. I think I measured around 250-300ua (0.25-0.3ma) IIRC.

It should last around 1.5 years with 3500ma cells IIRC.

Maybe you just used it more then you thought?

I dont think so, but I will certainly try again… There is probably some way to hook up a meter to measure it too…

Texas_Ace
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Yes, if you have a reasonably good multimeter you can measure the parasitic drain directly without a lot of work, although you might need a second set of hands to hold wires in place.

netprince
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I just measured 7ma with my meter. That would mostly deplete the batteries in about a month, which is exactly the result I just found.

EDIT: Is there some kind of indicator LED timeout that kicks in to save power? I would have to measure again after that happens…

netprince
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I double checked with the meter, it reads 7ma for about 3 seconds, then it drops down to something like 0.25ma. Its got to be the atiny powering down? Anyway… I’m going to make sure to loosen the body before storage from now on…

Texas_Ace
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netprince wrote:
I double checked with the meter, it reads 7ma for about 3 seconds, then it drops down to something like 0.25ma. Its got to be the atiny powering down? Anyway… I’m going to make sure to loosen the body before storage from now on…

Yes, that is exactly what should happen. I think it is 5 second that the MCU says powered up and after that it goes to sleep mode to reduce power down to around 0.25ma like you saw.

Which should get you over 1.5 years with 4 cells or twice that with 8 cells.

No idea why yours died so fast.

Locking out any e-swich light is the est idea if it will not be used for awhile.

T18
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Edit: Sorry this is a support thread, not what I think is a nifty carry case for the GT thread, deleted.

Wieselflinkpro
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I have Issues with the anodisation on my today arrived GT.
There are scratches on the Pill-section and on the first fin of the reflector on both sides of the Pill.

It seem that the Tool is verry dirty and makes scratches.

Texas_Ace
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Wieselflinkpro wrote:
I have Issues with the anodisation on my today arrived GT.
There are scratches on the Pill-section and on the first fin of the reflector on both sides of the Pill.

It seem that the Tool is verry dirty and makes scratches.

I will pass this on once they return from CNY. I would send Neal a message about this to see what can be done.

Wieselflinkpro
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Texas_Ace wrote:
Wieselflinkpro wrote:
I have Issues with the anodisation on my today arrived GT.
There are scratches on the Pill-section and on the first fin of the reflector on both sides of the Pill.

It seem that the Tool is verry dirty and makes scratches.

I will pass this on once they return from CNY. I would send Neal a message about this to see what can be done.


Thanks for answering. I could wipe it away with a little wet fingers. That means anodisation is ok.
Texas_Ace
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Wieselflinkpro wrote:
Texas_Ace wrote:
Wieselflinkpro wrote:
I have Issues with the anodisation on my today arrived GT.
There are scratches on the Pill-section and on the first fin of the reflector on both sides of the Pill.

It seem that the Tool is verry dirty and makes scratches.

I will pass this on once they return from CNY. I would send Neal a message about this to see what can be done.


Thanks for answering. I could wipe it away with a little wet fingers. That means anodisation is ok.

Great, I kinda figured it might be the case, the ano on these lights is super tough from what I have seen.

pommie
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Tough maybe, but not as tough as the person tightening this one.

I have broken two straps due to using piping to get more leverage Tired
And it is still not open.

Just so no one thinks it arrived like that, it did not, the second strap to break did it.

Cheers David

Nothing to see here folks, move along...

T18
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Pommie, I had the same thing going on with the two I bought, I started with Harbor Freight strap wrenches but had to buy two sets just so I would have 2 large wrenches and snapped both of those, then bought some other of Amazon and broke them as well.
I’ve seen this wrench mentioned before on one of the GT threads but this is definitely worth mentioning again because with this wrench the GT came apart easily.
It’s on Amazon called the BOA Constrictor, it’s more expensive than the others but it works great, BOA strap wrench

Edit: You might need 2 of them really, but it worked well using the big Harbor Freight strap wrench to hold the light in place and this BOA for for breaking the bezel and heat fin sections apart.

KawiBoy1428
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pommie wrote:
Tough maybe, but not as tough as the person tightening this one.

I have broken two straps due to using piping to get more leverage Tired
And it is still not open.

Just so no one thinks it arrived like that, it did not, the second strap to break did it.

Cheers David


Jeez David, what strap wrench did you use?

KB1428 “Live Life WOT”

pommie
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Knowing the person I borrowed them from they would be mid priced, not top quality but they were all metal so not cheap either, all I have to do now is ask that person what I owe him to buy two replacements Cash

I will find a way, even if I damage it more Evil I got it to mod which I cannot do if I can’t get into it.

Cheers David

Nothing to see here folks, move along...

JasonWW
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Maybe we need to replace the o-ring against the glass with something that has less friction. A silicone o-ring?

Maybe we can coat the O-ring in something slippery that won’t dry up?

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices

Wieselflinkpro
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Now I have found a dead led-die on my gt. I can see it with my eyes if I look to the LED at the lowest mode.
Is this the first DOA-GT?
Thats hard to check for Lumintop and to notice that fault.

Here you can see the spot at a distance of 1.5m:

I put a lens on the GT to show the LED better:

And here you can see, what the lens is projecting:

JasonWW
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That’s very strange. Since the xhp35 is 4 dies wired in series. If one die loses power, they should all turn off.

Do you think maybe a dark piece of dust or debris landed on the die and then got burned up?

Now it may be blocking light output.

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices

joechina
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Well if one of the four dies is less efficient you geht less light for the same current.
Maybe it was on the edge off the spec when Cree selected the four dies?

Well, it is sure not nice, but dead on arrival?

Versuch mal die LED direkt zu fotografieren, unterbelichtet und mit nem ND-Filter

Texas_Ace
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Wieselflinkpro wrote:
Now I have found a dead led-die on my gt. I can see it with my eyes if I look to the LED at the lowest mode.
Is this the first DOA-GT?
Thats hard to check for Lumintop and to notice that fault.

Here you can see the spot at a distance of 1.5m:

I put a lens on the GT to show the LED better:

And here you can see, what the lens is projecting:
!{width:70%}http://www.taschenlampen-forum.de/media/defekte-led-mit-linse-projeziert...!

Very strange indeed, this is also the first I have heard of any major issues with any GT so far. Everything else have been minor things.

Like they said, it is very strange that 1 die would burn out while the rest still work. Can you get a picture of the LED itself? Maybe on moon mode as well.

Wieselflinkpro
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It is hard to make any good picture with my Nokia 808 PureView Cellphone. But I made some.
I did not have an other camera, only a small old Exilim EX-H10, which makes worse pictures as my cellphone. It has only a small 12MP CCD-Sensor. My Cellphone-Sensor is 1/1,2” big CMOS with 38MP.





Last two pics with the same orientation. You can see the bonding wires.

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That is definitely a faulty die in the LED.

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Wieselflinkpro wrote:
It is hard to make any good picture with my Nokia 808 PureView Cellphone. But I made some.
I did not have an other camera, only a small old Exilim EX-H10, which makes worse pictures as my cellphone. It has only a small 12MP CCD-Sensor. My Cellphone-Sensor is 1/1,2” big with 38MP.





Last two pics with the same orientation. You can see the bonding wires.


I have had the same thing happen to other quad LED’s and the XHP35’s too, but only in Moon light level/mode, anything higher all 4 dies worked…

KB1428 “Live Life WOT”

ZozzV6
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Try looking at it at higher power through a welding protection glass if it is powering up at higher level.

Wieselflinkpro
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ZozzV6 wrote:
Try looking at it at higher power through a welding protection glass if it is powering up at higher level.

I see it in higher levels too. I can see the dark edge in the Hotspot, so no need for welding glass.
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ZozzV6 wrote:
Try looking at it at higher power through a welding protection glass if it is powering up at higher level.

Bummer Man!

Noticed something else with your centering ring bar too…

KB1428 “Live Life WOT”

Wieselflinkpro
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All Centering rings in the production lights has this big hole. Only the prototypes had a good fitting centering ring.

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