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Old 09-12-2011, 11:28 PM #1
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Question 1.2w 445nm yobresal build

I bought a new 1.2w 445nm Yobresal build, on the forums from Yobresal. Recently it has been having trouble turning on though. I have been fairly careful to follow the duty cycle. Its strange sometimes when I hit the clicky it turns on sometimes it doesn't. more often then not it doesn't turn on, taking out the batteries and putting them back in seems to sometimes help.

Anyways I was just curious if anyone else is having this problem, and if there's any ideas to what it could be that's wrong with it.

Also any good ways to clean the lens without scratching it?



Last edited by SacredTanakh; 09-13-2011 at 06:49 AM.
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Old 09-13-2011, 03:00 AM #2
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Default Re: 1.2w 445nm yobresal build

I have had that problem with my Yob. These switches were made for a flashlight, not the amperage of these high-powered diodes.

I took the switch out, disassembled it, cleaned the parts, applied a little di-electric grease to the parts, then reassembled. It has worked great ever since. Just because this worked for me does not mean it will work for you.

If you contact Luke, I'm sure he can help you out. He's awesome at customer service.

For the lens, 90+ % alcohol and a cotton swab. Wet one end of the swab. Clean the lens with a rotational motion, then use the dry end to finish up, removing all stray cotton fibers.

I also hear a microfiber cloth works wonders, as well.
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Old 09-13-2011, 03:08 AM #3
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Default Re: 1.2w 445nm yobresal build

I had the exact same problem w/ mine when i got it! At times it would turn on, and other times it wouldn't. I sent it back and he fixed the problem. Though from what he told me, the problem was too much grease on the threads which didn't give a great connection to the body as a ground. Try cleaning some of the grease off the threads, it may help
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Old 09-13-2011, 03:10 AM #4
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Default Re: 1.2w 445nm yobresal build

be careful with the cotton swab... if you get a fiber on there, its nearly impossible to get off and luke does provide excellent service, mine was missing an O-ring and he shipped one to me free there is a thread about lens cleaning and i heard the foam part of an xbox headphone thingy works very well..
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Old 09-13-2011, 03:31 AM #5
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Default Re: 1.2w 445nm yobresal build

i do encounter the same problem.
the fault for mine case is the contact between the clicky switch and the tail cap body. (hope I get the description rite)
clean the contact between with alcohol and it works ever since.

great laser from Yob i would say.
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Old 09-13-2011, 06:46 AM #6
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Default Re: 1.2w 445nm yobresal build

Thanks for the help guys, I was thinking it was maybe the tail cap/clicky causing the issue.
Seems to work fine if I don't screw the tail cap on all the way.


Also, agreed the laser is amazing.

Last edited by SacredTanakh; 09-14-2011 at 03:44 AM.
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Old 09-13-2011, 12:35 PM #7
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Default Re: 1.2w 445nm yobresal build

Quote:
Originally Posted by SacredTanakh View Post
Thanks for the help guys, I was thinking it was maybe the tail cap/clicky causing the issue. Seems to work fine if I don't screw the tail cap on all the way.

Also, agreed the laser is amazing.
That was the same exact problem I had. It was quite frustrating....
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Would you like to purchase some M-140 445nm diodes (individual or pressed into Aixiz or pure copper module) at very reasonable prices? PM me if you are interested!

My laser list has become way too big; I'm listing some of my favorites out of my extensive collection.
615mw 405nm/12X Spiderfire X-03
148mw 405nm/GGW in my "Hotlight-Saber" host
1920mw 445nm River Rock custom
1530mw 445nm Yobresal
1360mw 445nm Qumefox Sipik
800mw 445nm WL Arctic Spyder S3
240mw 473nm CNI Labby
8mw 473nm CNI Labby
528mw 532nm Lazerer Cannon
310mw 532nm Firedragon III
300mw 532nm CNI Labby
180mw 532nm SKY Laser
4x 147-267mw 532nm Waterproof
900mw 635nm in Temporary Finned Labby Sink
Several 635nm diodes awaiting a build
500mw 650nm Dual LPC-826 Labby
251mw 650nm/LPC-815 Ultrafire U-501B
Several 685nm diodes awaiting a build
3W 808nm diode awaiting build

Kenometer w/ Coherent Thermopile 10W
LaserBee 2.5W USB LPM
Radiant Alpha 2W LPMSOLD=Now in Kuwait!
1.2W RGB Projector; JNM Wide Sky Galvos (Made in Germany); Laser Show Express; Arduino-based DAC
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Old 09-13-2011, 07:18 PM #8
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Default Re: 1.2w 445nm yobresal build

if screwing the tail cap a lil loose fixes it. i would snip little portions of the spring. that is, if your laser is for sure out of the "warranty" period.

but snip a little off at a time

michael.
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Old 09-14-2011, 03:43 AM #9
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Cool Re: 1.2w 445nm yobresal build

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Originally Posted by chipdouglas View Post
if screwing the tail cap a lil loose fixes it. i would snip little portions of the spring. that is, if your laser is for sure out of the "warranty" period.

but snip a little off at a time

michael.
I bought my laser fairly recently, so the laser should still be.
I PM'ed Yob, to see what he thinks.

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Old 09-14-2011, 12:09 PM #10
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Default Re: 1.2w 445nm yobresal build

Hm, seems like the problems I've had.

When you remove the tailcap, look where the spring with the connection is. You should see an aluminium ring with two holes in it. Use a tweezers or something, and rotate the ring (by the holes) clockwise to tighten it, as hard as you can.

Try again and let us know.

I've had this problem with some Ultrafire 501B lights, where there was too much thread lubricant applied, and basically it stuck between the host itself, and the ring, and when you were to unscrew the tailcap, ring stuck to the host and basically untreaded itself from the tailcap at the same time.

Anyhow, try to tighten it, let us know.
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Old 09-14-2011, 05:01 PM #11
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Default Re: 1.2w 445nm yobresal build

yes this unfortunately has been a common problem with my latest batch. The tailcaps were not assembled tightly causing intermittent connection at time. The solution to this is to unscrew the tailcap removing all parts, toss the smallest black plastic ring, and then TIGHTLY screw the tailcap back together again. Works 90% of the time.
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Old 09-14-2011, 09:12 PM #12
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Smile Re: 1.2w 445nm yobresal build

Quote:
Originally Posted by Eudaimonium View Post
Hm, seems like the problems I've had.

When you remove the tailcap, look where the spring with the connection is. You should see an aluminium ring with two holes in it. Use a tweezers or something, and rotate the ring (by the holes) clockwise to tighten it, as hard as you can.

Try again and let us know.

I've had this problem with some Ultrafire 501B lights, where there was too much thread lubricant applied, and basically it stuck between the host itself, and the ring, and when you were to unscrew the tailcap, ring stuck to the host and basically untreaded itself from the tailcap at the same time.

Anyhow, try to tighten it, let us know.
Quote:
Originally Posted by yobresal View Post
yes this unfortunately has been a common problem with my latest batch. The tailcaps were not assembled tightly causing intermittent connection at time. The solution to this is to unscrew the tailcap removing all parts, toss the smallest black plastic ring, and then TIGHTLY screw the tailcap back together again. Works 90% of the time.
I'll definitely try that when I get home, and I'll let you guys know if that fixes it.

Last edited by SacredTanakh; 09-14-2011 at 09:13 PM.
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