Old 01-06-2017, 06:49 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 06:50 AM.
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Old 01-06-2017, 10:39 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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Old 01-06-2017, 02:37 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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Old 01-06-2017, 04:30 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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Old 01-07-2017, 06:07 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, 06:41 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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Old 01-12-2017, 12:30 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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Old 02-12-2017, 10:05 PM #8
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Default Re: Violet laser 303 gets super weak

yeahh it this happen to the 303 violets 1 out of 3 are ok
some 303s you can just pull out the module and diode i have a some of 303's collected the most powerful ones
YL-Laser and PM-Laser the PM-laser is the most powerful one and hard to get if your lucky the seller may ship you one
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Old 04-28-2017, 11:17 PM #9
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Default Re: Violet laser 303 gets super weak

Hello I bought an ebay YL 303 violet laser and i put a full charge 18650 inside and its barely visible! is this normal? 3.7v battery 5mw laser would apreciate any kind of help
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Old 04-28-2017, 11:20 PM #10
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Default Re: Violet laser 303 gets super weak

Quote:
Originally Posted by Brock Lee View Post
Hello I bought an ebay YL 303 violet laser and i put a full charge 18650 inside and its barely visible! is this normal? 3.7v battery 5mw laser would apreciate any kind of help

405nm is not very visible to our eyes to begin with. How "barely visible" is it? Got pictures?
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Old 04-28-2017, 11:47 PM #11
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Default Re: Violet laser 303 gets super weak

Quote:
Originally Posted by LiveRay View Post
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)
You can't really expect much for approx. the price of a good cup of coffee.

If you wanrt a good 405nm have a look here: PL-E mini 445nm 450nm Blue Laser

Or here: https://www.sanwulasers.org/

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