ASTROLUX MF01 Mini - common issues thread

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Colonel Light
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I ordered an MF01 Mini without having studied this thread in detail, thankfully I was able to cancel the order before it shipped. Feel bad for the people who got stuck with one. Surprised the reviewers didn’t seem to pick up on it apart from Zozz lights. I guess because they just did a short term test and mostly ran it on turbo for some quick photos or footage they wouldn’t have encountered the problems of sustained output at lower brightness. I guess they say we learn more from our failures than our successes.

JasonWW
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I’m sure most people consider this light a success.

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YogibearAl
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Yeah I tend to agree with JasonWW. I ordered the copper heat sync before I received the lights. After testing, I believe they aren’t as necessary but a nice to have. The lights themselves works well. Form factor along with battery choices and built in charging makes it versatile. No regrets buying it.

vresto
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i think about this flashlight and compare it even with older model Amutorch x9…i guess people here are satisfied with this astrolux right? cant choose still…

EDC-Mateminco mt04 xhp50 nw,Sofirn If-25a Lh351d

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ysgramor
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Hi,
has anyone measured the output of this light in XPL 5000K version and/or compared it with other known lights with the same emitter?

I’m not sure if I have the voltage measurement bug, or some other problem.The voltage bug should influence only when LVP kicks in but not the output with a fully charged cell right?
A fully charged cell in this light shows 3,9V. But I’m not sure if it’s because of this bug; could it instead be due to abnormally high resistance of the light itself? But would it show in the voltage measurement if that were the case?
I’ve tried cleaning all the threads, nothing changes.

The thing is, I get consistently LESS turbo output than with the FireFlies E07 with the same leds, using the same batteries. Like 10-15% less.
Only with a fully charged Samsung 30T the MF01 comes closer, but still 5% lower.
The fact that the output is more similar the higher the current the battery can pump makes me think there is actually something wrong with my light.

Dr.Phillip
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ysgramor wrote:
Hi,
has anyone measured the output of this light in XPL 5000K version and/or compared it with other known lights with the same emitter?

I’m not sure if I have the voltage measurement bug, or some other problem.The voltage bug should influence only when LVP kicks in but not the output with a fully charged cell right?
A fully charged cell in this light shows 3,9V. But I’m not sure if it’s because of this bug; could it instead be due to abnormally high resistance of the light itself? But would it show in the voltage measurement if that were the case?
I’ve tried cleaning all the threads, nothing changes.

The thing is, I get consistently LESS turbo output than with the FireFlies E07 with the same leds, using the same batteries. Like 10-15% less.
Only with a fully charged Samsung 30T the MF01 comes closer, but still 5% lower.
The fact that the output is more similar the higher the current the battery can pump makes me think there is actually something wrong with my light.

Hmm, ghey changed som ecomponents in Lexels design which resorted in different volage drop across a diode and a mosfet. The voltage measurement only influences LVP and the voltage blinkout. How did you measure the turbo output?

ysgramor
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Well, I did not really measure it in a reliable way… I do not have a sphere so I just use my phone lux meter against a wall. So I don’t have absolute values but I can make comparisons. Comparisons should be reliable with similarly shaped beams, although the E07 has a wider hotspot and less spill which could influence the result

EDIT
As a side note, the E07 too has the same “bug” with the termal stepdown kicking in at top ramp even while the light is just barely warm or still cold. It is easily circumvented by using the stepped ramp, as soon as it steps down just kick it back up once or twice and then it will stay at that level.

Dr.Phillip
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Well, you said it, there are differences in beam profile and shape and you did not choose the most reliable mothod of measuring. You can try measuring the voltage and current and calculate the output power like that. I am not surprise if that measurement method would show that type of difference even in flashlight with spot on power output.

Tom E
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My green alum MF01 mini doesn't focus well - the optics are not all the way down. The brass one I have focuses way better, and can tell the optics are fully down. If yours has the problem, your measurements may be effected.

 

YogibearAl
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ZozzV6 wrote:
Maybe I will try this 7135 remove thing if it helps.

ZozzV6,

Just wondering if you ever got around to this? Just curious. Also how would removing and stacking on the other 7135 affect the output when ramping? Wouldn’t it cause ramping to jump on the stacked 7135? And would the flash light go dark when it hits the the blank spaces that got the 7135 removed?
amishbill
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ZozzV6 wrote:
I also saw another design flaw that one of the purple leds on aux led board is too close to the main led and the optic sits right on it and crushed it.

One of mine has a dead aux LED. I’ll have to get a magnifier and check this out. If It’s crushed, well, it’s blessedly tiny but at least I know what the problem is.

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JasonWW
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amishbill wrote:
ZozzV6 wrote:
I also saw another design flaw that one of the purple leds on aux led board is too close to the main led and the optic sits right on it and crushed it.

One of mine has a dead aux LED. I’ll have to get a magnifier and check this out. If It’s crushed, well, it’s blessedly tiny but at least I know what the problem is.

Is this a new light? You might want to verify its voltage is high enough. They are already just barely running so a slight tolerance on one led might cause it to not light up. If you bump up the power and it still doesnt come on it might be soldered crooked or actually broken.

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amishbill
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I can tweak the brightness trimmers a bit. Now, off to find my micro screwdrivers!

DIY LT1 battery wrap image. "PDF on Google Drive":https://drive.google.com/open?id=1IHIEOi1NXu868IYNCzIM7D2Ulpxchmww

Fresh Sanyo NCR18650GAs already wrapped "for sale HERE":http://budgetlightforum.com/node/69120 if you like.

Lexel
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Astrolux got for the light now brass heat spreaders, not sure when they get added to lights that sell

MoreLumens
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Lexel wrote:

Astrolux got for the light now brass heat spreaders, not sure when they get added to lights that sell

Is that possible to install on older models that didnt have that and are they selling those separately? Not that I need one because I have copper one, but still.

bwl123
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Hi
I dropped my MFO1 mini, a few days later I switched it on and it will not turn on.
Checked the battery and found it was completely drained.
After recharging the battery it still did not work.
When I found the flashlight was getting warmer I left it for 15 minutes and measured the temperature of the flashlight and voltage of the battery.
The voltage had decreased and the temperature increased
Can anyone help?

MoreLumens
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bwl123 wrote:
Hi I dropped my MFO1 mini, a few days later I switched it on and it will not turn on. Checked the battery and found it was completely drained. After recharging the battery it still did not work. When I found the flashlight was getting warmer I left it for 15 minutes and measured the temperature of the flashlight and voltage of the battery. The voltage had decreased and the temperature increased Can anyone help?

Have you opened it? There may been some extra metal chips that has caused short circuit when you dropped it:

MoreLumens wrote:
So I started to install copper plate mod and found this inside:

Little bit of extra metal around that middle part. I remember reading from some thread that this was common “problem”. Without this mod I wouldnt even know that was there just waiting to get loose and causing major malfunction. Shocked

JasonWW
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bwl123 wrote:
Hi
I dropped my MFO1 mini, a few days later I switched it on and it will not turn on.
Checked the battery and found it was completely drained.
After recharging the battery it still did not work.
When I found the flashlight was getting warmer I left it for 15 minutes and measured the temperature of the flashlight and voltage of the battery.
The voltage had decreased and the temperature increased
Can anyone help?

When you say completely drained, what voltage was it?

Under what conditions was it getting warmer? Turned off?

Measure the parasitic drain. See if it’s still in spec.

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blind-eye
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I went to use my MF01 mini today after not using it for 3-4 months, and found that the battery (Keeppower 5500) was dead. I tried to charge it as usual but my charger refused, so I tested the battery’s voltage and found it was drained to 1.5 volts.

Did I make a mistake leaving the light sitting that long unused? I read that AUX leds could drain a battery to damaging levels while sitting idle, but the MF01 mini specs say that the AUX leds on the board shut off before they drain the battery too much, so it doesn’t seem like it would be because of that.

Dr.Phillip
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Lexel wrote:

Astrolux got for the light now brass heat spreaders, not sure when they get added to lights that sell

Thank you for your update Lexel. And that you sent Astrolux/Mateminco the design and talked them into putting it there. Its great news. I might buy a few more as gifts now.

JasonWW
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blind-eye wrote:
I went to use my MF01 mini today after not using it for 3-4 months, and found that the battery (Keeppower 5500) was dead. I tried to charge it as usual but my charger refused, so I tested the battery’s voltage and found it was drained to 1.5 volts.

Did I make a mistake leaving the light sitting that long unused? I read that AUX leds could drain a battery to damaging levels while sitting idle, but the MF01 mini specs say that the AUX leds on the board shut off before they drain the battery too much, so it doesn’t seem like it would be because of that.


Normally you should turn the tail cap to break the electrical flow if not using the light for a long time. You will need to throw that battery out. It’s now a fire hazard.

It’s weird it went down that low. The aux leds should shut off at 2.8v. The drivers lvp is only active when the light is turned on, not when off. When off it should be using only a tiny amount of power. Enough to last your years. Maybe your parasitic drain is much higher than it should be. You would need a digital multimeter and turn the aux leds off to test it. It’s also possible the aux led lvp is not shutting down properly. Youd need a battery charged to about 2.6v or 2.7v to test that.

Something definitely seems wrong with your light.

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blind-eye
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JasonWW wrote:
blind-eye wrote:
I went to use my MF01 mini today after not using it for 3-4 months, and found that the battery (Keeppower 5500) was dead. I tried to charge it as usual but my charger refused, so I tested the battery's voltage and found it was drained to 1.5 volts. Did I make a mistake leaving the light sitting that long unused? I read that AUX leds could drain a battery to damaging levels while sitting idle, but the MF01 mini specs say that the AUX leds on the board shut off before they drain the battery too much, so it doesn't seem like it would be because of that.
Normally you should turn the tail cap to break the electrical flow if not using the light for a long time. You will need to throw that battery out. It's now a fire hazard. It's weird it went down that low. The aux leds should shut off at 2.8v. The drivers lvp is only active when the light is turned on, not when off. When off it should be using only a tiny amount of power. Enough to last your years. Maybe your parasitic drain is much higher than it should be. You would need a digital multimeter and turn the aux leds off to test it. It's also possible the aux led lvp is not shutting down properly. Youd need a battery charged to about 2.6v or 2.7v to test that. Something definitely seems wrong with your light.
Thanks for the info. I'll have to look into it more closely then.

 

Funtastic
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blind-eye wrote:
Thanks for the info. I’ll have to look into it more closely then.

 

How charged was the battery when you left it sitting for 3-4 months? If it was already low then that could be the issue why it was so low

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JasonWW
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Funtastic wrote:
blind-eye wrote:
Thanks for the info. I’ll have to look into it more closely then.

 

How charged was the battery when you left it sitting for 3-4 months? If it was already low then that could be the issue why it was so low


That should not matter.

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blind-eye
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Funtastic wrote:
blind-eye wrote:
Thanks for the info. I'll have to look into it more closely then.

 

How charged was the battery when you left it sitting for 3-4 months? If it was already low then that could be the issue why it was so low
Way too long for me to remember, but I can say that I only used it for a few minutes at a time whitewall hunting, so I don't think it would have been drained all that much.

 

killingtime
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Has anyone got a picture of what’s below the driver PCB (as shown below), so we can see how the driver board is attached to the light body?

The image below was taken from post 6. In this post JasonWW states:

“Actually, the battery tube does not contact the driver so that heat is not being drawn away.”

If that’s the case, then it’s no surprise the board is overheating. It’s just a matter of time. I was about to state that in all the teardown pictues I’ve seen on this light, I don’t see any thermal compound, but if there’s no ledge for the driver board to sit on then … that explains why.

I hope I’m mistaken, otherwise this is a case of very poor design.

There’s not much point in having a copper head\body option if the driver board is practically floating on air. Please tell me this isn’t the case…..

Every 7135 board I’ve seen in other lights is pressed\soldered against the flashlight body so the heat has somewhere to go.

JasonWW][quote=Dr.Phillip wrote:
varbos
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killingtime wrote:
Has anyone got a picture of what’s below the driver PCB (as shown below), so we can see how the driver board is attached to the light body?

The image below was taken from post 6. In this post JasonWW states:

“Actually, the battery tube does not contact the driver so that heat is not being drawn away.”

If that’s the case, then it’s no surprise the board is overheating. It’s just a matter of time. I was about to state that in all the teardown pictues I’ve seen on this light, I don’t see any thermal compound, but if there’s no ledge for the driver board to sit on then … that explains why.

I hope I’m mistaken, otherwise this is a case of very poor design.

There’s not much point in having a copper head\body option if the driver board is practically floating on air. Please tell me this isn’t the case…..

Every 7135 board I’ve seen in other lights is pressed\soldered against the flashlight body so the heat has somewhere to go.


It is normal for a driver board to be mounted like this. There are components on both sides so it cannot sit flush on a flat shelf. It should not be a problem because the driver board does not generate a lot of heat relatively speaking.

The problem with MF01 mini is that the 7135s are transferring heat directly to the temperature sensor on the other side. Anduril sees a rising temperature and because the algorithm is partially predictive, it immediately takes steps. That is my understanding anyway, I am open to correction.

You are correct in your statement that it is poor design and testing. A single test would have revealed this problem to Astrolux, and almost surely did. They shipped anyway because that it is the Chinese way. They will keep doing it as long as people keep buying their half-baked crap.

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varbos wrote:
A single test would have revealed this problem to Astrolux, and almost surely did. They shipped anyway because that it is the Chinese way. They will keep doing it as long as people keep buying their half-baked crap.

Mateminco is the manufacturer, Astrolux is Banggood’s brand name.

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varbos
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Funtastic wrote:

Mateminco is the manufacturer, Astrolux is Banggood’s brand name.

And what has that got to do with anything ?
Funtastic
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Aren’t I able to chip in? You said it was Astrolux that shipped the light even though there was an issue. I was just simply stating that Mateminco is who didn’t do the testing, not Astrolux.

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