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Old 01-06-2017, 07:49 AM #1
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Unhappy Violet laser 303 gets super weak

Hey there,

I'm in rage, because my second violet laser 303 got extremely weak. I've heard that this often happens to violet lasers. ��
The biggest problem is that I don't have access to the driver.
Is this repairable and if so, how?

(I've fully charged the batteries)



Last edited by LiveRay; 01-06-2017 at 07:50 AM.
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Old 01-06-2017, 11:39 AM #2
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Default Re: Violet laser 303 gets super weak

405nm 303s are known to do this because they are built with the worst diodes available. There is no way to repair this except for buying a new one.
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405nm "5mW" eBay pen, 50mW 'bottle' pointer, 450mW lmlaser
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450nm 2W SF501B, 10mW pointer, 50mW lmlaser
453nm 100mW LaserBTB HL
455nm "1.6W" Arcane
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470nm NUBM07E S4X build
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513nm 50mW in Thor host
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515nm 200mW SF501B
520nm 1.4W S4X build
527nm primary DPSS (301)
532nm 500mW XPL-H, 2x gearbest, 9-line 301, 35mW lmlaser
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542nm secondary DPSS (2x)
543.5nm Gammex alignment HeNe
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561nm 50mW PGL-III-C
583.8nm Spartan mid-cold line
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650nm 5mW pointer
660nm "100mW" (3x), 650nm "5mW" eBay pen
690nm 15mW laserlands module

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LaserBee AX 3 Watt LPM
Thunder Optics Spectrometer

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Old 01-06-2017, 03:37 PM #3
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Default Re: Violet laser 303 gets super weak

Quote:
Originally Posted by Sta View Post
405nm 303s are known to do this because they are built with the worst diodes available. There is no way to repair this except for buying a new one.

This^^

It's dead, I've had two of them die after <5 minutes of use. Don't recommend the 405nm 301/3s for that reason. The 532nms are decent at least.

Not a big loss at least, seeing as they are so cheap.
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488nm - Spectra Physics 163 Argon 30mW
445nm - Sanwu Laser Pocket Series - 500mW (Ordered)

532nm - Gearbest 303 Pointer 90mW
~650nm - Sanwu Laser Pocket Series - 250mW
808nm - Melles Griot 532nm Lab Unit - No Crystals >10W
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Old 01-06-2017, 05:30 PM #4
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Default Re: Violet laser 303 gets super weak

Only the 532nm 303/301 lasers are any good based on my experience. The red and violet ones just plain suck. I had a violet one where they didn't even put a strain reliever under the driver board, so every time you pushed on the button you were bending the diode pins. At least the green ones I've owned had a strain relief under the drivers.
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700mw 405nm Sanwu Challenger(782mw peak 730ish mw average)
Sanwu Spiker Series 3W 445nm
2W O-like 450nm(2.2W average/2.25W peak) and Ebay 450nm THOR M II laser(1600mw average/1700 mw peak)
1.4W Jetlasers PL-E Pro 462nm(average 1490mw)
5.05W 465nm build by AlienLaser and 3.5W 465nm Jetlasers PL-E pro.
50mw 515nm challenger(85mw average) and 5-30mw penlaser
1W 520nm Sanwu Spiker series with beam expander
800mw 532nm Jetlasers PL-E Pro (850mw average, 988 mw peak) and 450mw laserglow Hercules with X10DR beam expander
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561nm project box build(8-9mw average 10 mw peak)
589nm Dragon Lasers Spartan 50(51mw average/70mw peak)
593.5nm 2-5mw CNI penlaser(2-3mw average)
638nm Sanwu Spiker series(860mw average) and 500mw O-like 638nm pointer
639nm Sanwu Silver Series Tribeam(1700mw average/1800mwpeak)
1W 650nm Jetlasers PL-E Pro(1038mw average 1087mw peak)
671nm 100mw Red DPSS labby from LillyElectronics
685nm box pointer with laserlands 15mw module.

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Last edited by Razako; 01-06-2017 at 05:33 PM.
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Old 01-07-2017, 07:07 AM #5
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Default Re: Violet laser 303 gets super weak

Quote:
Originally Posted by diachi;1455g455
This^^
Not a big loss at least, seeing as they are so cheap.
Yeah, they're quite cheap, but ironically the green ones are quite cheaper.
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Old 01-07-2017, 07:41 AM #6
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Default Re: Violet laser 303 gets super weak

Quote:
Originally Posted by LiveRay View Post
Yeah, they're quite cheap, but ironically the green ones are quite cheaper.
They're typically about the same price.
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488nm - Spectra Physics 163 Argon 30mW
445nm - Sanwu Laser Pocket Series - 500mW (Ordered)

532nm - Gearbest 303 Pointer 90mW
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808nm - Melles Griot 532nm Lab Unit - No Crystals >10W
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Old 01-12-2017, 01:30 AM #7
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Default Re: Violet laser 303 gets super weak

I suppose this is about a specific vendor?

The host and wavelength don't seem problematic as such.

If these diodes actually fail in 5 minutes they are overdriving them pretty hard though, or they are using reject diodes or something like that.
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