Old 08-27-2010, 04:50 PM #1
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Default Help! Got a 250mw red laser. Not working

i got a second hand red laser about 2 months back.

the laser diode does not seem to be working.

i was wondering if i could replace it with the 445nm diodes from the
casio XJ-A140 projector.

Can someone please give me some advice??

Here the link for the photos

ImageShack Album - 6 images


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Old 08-27-2010, 05:30 PM #2
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Default Re: Help! Got a 250mw red laser. Not working

If you unsolder the diode and replace it with a test load of regular black 6-8 diodes and a 1 ohm resistor you will be able to see if your driver is of a type capable of delivering the required voltage and current for a A140.
It will also let you set the new current for a A140.

Short version, they are not easily interchangeable.
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Basic laser building guide.
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Old 08-28-2010, 02:27 AM #3
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Default Re: Help! Got a 250mw red laser. Not working

so would it be better to buy just the diode or get a new laser?
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Old 08-28-2010, 06:34 AM #4
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Default Re: Help! Got a 250mw red laser. Not working

Well, that depends on you skills, tools, and willingness for DIY.
My signature contain a link to a nice beginners laser kit, and to a good laser building guide.
If nothing else you have a nice looking host there, likely with a functional driver.

I assume the diode died on you after some use, likely from overheating or simply from being set too high?
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100mW Odicforce kit.
App. 300mw MiniMag
App 120mW labby
Fan cooled 400mA 12X 405nm flashlight

532nm 150mW Labby.
532nm 50mW in flashlight

1.2W 445nm Yobresal
Basic laser building guide.
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