Old 04-29-2011, 04:51 AM #1
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Default CNI PGL-III 400mW is now 200mW...

So, for about a year now, from one of Glenn's CNI GB's, I had a great performing CNI PGL-III-C 532 400mW.

I've used it maybe.. 10 times to do some tests.

This was one of the lasers that would start low but eventually climb up past its 400mW rating and do 650-700mW or so.

Well, today, I turned it on, and, it "kinda" hit 300mW after a little but, and has been settling at 160-190mW since.

I'm guessing, that after such a short life, it's just pretty much done. Which is really unfortunate; (I think this was around $700 a year ago) -- and now it's just a 190-200mW green.

Has anyone seen this happen? Do these tend to just give up after a while? I assume I'm seeing crystal or diode death here.

I've tried new 18650s... To say the least I'm a bit upset about such an expensive (and previously well-performing laser) just dying off without very much usage. And CNI likely won't even want to talk about it, at this point.


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808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW
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Old 04-29-2011, 05:59 AM #2
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Default Re: CNI PGL-III 400mW is now 200mW...

ROFL, I have not only seen it happen, I've seen it happen with 4 of my PGLs... The things just don't last... I've had 9 of them fail on me, and trust me.. It has ALL be defects. Some taking a while to show up. In the end I made CNI upgrade me to an MGL-400 for free, best choice ever.
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Old 04-29-2011, 06:00 AM #3
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Default Re: CNI PGL-III 400mW is now 200mW...

Was it the same situation? It just losing output like this?

You're lucky you got them to do something for you... I doubt they'll touch mine, it's been a year.
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808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW

Last edited by aryntha; 04-29-2011 at 06:01 AM.
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Old 04-29-2011, 06:09 AM #4
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Default Re: CNI PGL-III 400mW is now 200mW...

Quote:
Originally Posted by aryntha View Post
Was it the same situation? It just losing output like this?

You're lucky you got them to do something for you... I doubt they'll touch mine, it's been a year.
Yes, exactly the same. I would predict that it will continue to degrade to either about 10mW or 0... Don't be too sure of that, talk to Ava. I bet they will do something for ya, PM me if you need her email. And it took like 2 years to get my results......
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Old 04-29-2011, 06:12 AM #5
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Default Re: CNI PGL-III 400mW is now 200mW...

Every time I've tried to talk to Ava she's just stonewalled me... "Send it in and we will see if it is in warranty."

I'll try, I hope they're willing to do something. The only email I have is sales@cnilaser.com.
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3392nm:REO LHIP HeNe 2mW ∙ 980nm:OLIKE 155mW

808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW
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Old 04-29-2011, 06:16 AM #6
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Default Re: CNI PGL-III 400mW is now 200mW...

Sad to hear that MT, hope they take care of you.
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Old 04-29-2011, 06:38 AM #7
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Default Re: CNI PGL-III 400mW is now 200mW...

Well, DLMB you were right. It's doing ~20mW now. Probably on its way out.

For $750 I'd really hope this would last more than a year. Really do wonder if they'll just refuse to do anything. Thanks for the support guys; all I can do now is hope that CNI shows some mercy.
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3392nm:REO LHIP HeNe 2mW ∙ 980nm:OLIKE 155mW

808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW
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Old 04-29-2011, 06:50 AM #8
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Default Re: CNI PGL-III 400mW is now 200mW...

Quote:
Originally Posted by aryntha View Post
Well, DLMB you were right. It's doing ~20mW now. Probably on its way out.

For $750 I'd really hope this would last more than a year. Really do wonder if they'll just refuse to do anything. Thanks for the support guys; all I can do now is hope that CNI shows some mercy.
heh, I have watched 9 of them die in various ways, that was the most common.
Good luck Aryntha, I'm sure they will help you some how

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Old 04-29-2011, 07:35 AM #9
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Default Re: CNI PGL-III 400mW is now 200mW...

Well I'll let folks here know if they do. Thanks, guys. I tried to be firm but polite in my first email, letting them know i've got 10+ lasers and likely will be buying more, if this works out.

I don't have my hopes up yet; but this being what seems to be a chronic problem with PGL-III-Cs and with CNI knowing we post this on the forum, maybe they will make good on it.
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3392nm:REO LHIP HeNe 2mW ∙ 980nm:OLIKE 155mW

808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW
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Old 04-29-2011, 07:47 AM #10
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Default Re: CNI PGL-III 400mW is now 200mW...

400mW goes to 200mW for a years? it's bad

AFAIK almost every manufacturer claims that their diode will life for approximately ~8000 hours. it's 333,333... days, or < 1 year.

this is confusing me, is "8000 hours" is period for "ON" state or accumulative with storing time?? AFAIK it's period for "ON" state.

IMO in your case, 8000 hours is an accumulative period for "ON" state and storing time.

BTW, what did you do with your laser that could possibly cause this?
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Old 04-29-2011, 07:53 AM #11
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Default Re: CNI PGL-III 400mW is now 200mW...

Quote:
Originally Posted by astralist View Post
400mW goes to 200mW for a years? it's bad

AFAIK almost every manufacturer claims that their diode will life for approximately ~8000 hours. it's 333,333... days, or < 1 year.

this is confusing me, is "8000 hours" is period for "ON" state or accumulative with storing time?? AFAIK it's period for "ON" state.

IMO in your case, 8000 hours is an accumulative period for "ON" state and storing time.

BTW, what did you do with your laser that could possibly cause this?
You don't have to do anything to cause it, it just happens. The 8000 hours is how long it will last turned on, accumulative.
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Old 04-29-2011, 08:03 AM #12
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Default Re: CNI PGL-III 400mW is now 200mW...

I didn't do anything to it. Ran it maybe 10 times. Some of those, metering it. Lit a match from ~5 feet away maybe twice. Duty cycle ~3min at most. It's never been dropped, and is kept in a plastic case at room temperature in a dry environment, all the time.

I've had it for about a year. "8000 hrs" MTBF does not mean storage time. It means operational time; so long as duty cycles are adhered to.

Last week, it was putting out 640mW. And was, when I turned it off last week.

Today, I turn it on, and it blips at 300mW for a bit, and now is down to ~30-60mW.

.. I think whether or not CNI makes good on this, will make a huge difference as to how many people will buy these lasers in group buys going forward.
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671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
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589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
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544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
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Old 04-29-2011, 08:06 AM #13
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Default Re: CNI PGL-III 400mW is now 200mW...

Really sorry to hear your laser has gone sour. Kind of an offtopic and random question, but does anyone know the size of the KTP CNI uses in these things?


Edit: And aryntha, if CNI says no to warranty repair, I say you take a hand at repairing it yourself. It's almost assuredly just the pump diode, if something was wrong with the crystals it'd be more obvious, I should think.
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Old 04-29-2011, 08:21 AM #14
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Default Re: CNI PGL-III 400mW is now 200mW...

I guess the YAG crystal may be broken. I see the same behaviour like with my RPL-425.
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Old 04-29-2011, 06:33 PM #15
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Default Re: CNI PGL-III 400mW is now 200mW...

I wonder if that could have happened during cooldown; basically due to it cooling off on its own the crystal cracked.

I'm having Glenn give a go to talking to CNI; Do you guys have any recommendations to minimize (and make life easier) with shipping to China?

I know last time we were taking $150 each way... Say an estimate of $150 each way for shipping plus $200 for repair; $500 to repair a $750 laser, I'm not quite sure if that's the best way to go.

(Yep, looking at UPS estimates I'm showing $146 each way... damn... $300 just in shipping...)

I know Glenn has returned stuff to CNI before; maybe I can send it to him and pay him to do so...

EDIT: Hmm, USPS says $35. Any reason to not go with USPS vs UPS for international?
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808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW

Last edited by aryntha; 04-29-2011 at 06:40 PM.
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Old 04-29-2011, 06:49 PM #16
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Default Re: CNI PGL-III 400mW is now 200mW...

These symptoms match what happened to my Viasho lab system.

It was the power supply and not the pump. So, if you take it apart, be sure to check the driver first...

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