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Old 07-02-2010, 03:35 AM #1
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Unhappy Broken blue/violet laser pointer! Please help!

Hey all,

First time posting, what a great forum!

Here's the story...

When i was a wee little lad, just kidding... My GF ordered me a kaleidoscopic blue/violet laser pointer from china (no brand name or anything worth any information other than which way the batteries should face) and it broke, obviously, but it did so in multiple steps. While rotating the lens to get the kaleidoscope effect I noticed that the assembly holding the kaleidoscopic part was also rotating. Also when removing the kaleidoscopic part the whole unit would rotate... kind of hard to describe but i will provide pictures once i get home.

Anyway, occasionally the entire laser pointer head would come off leaving behind just the casing and the batteries. When it did, a black wire was visible that was soldered to the board on one end and was stripped and free floating on the other. It appeared as if the stripped end was designed to contact the metal casing that held the laser diode as a means of bringing the positive end of the batter from the casing to the circuit board. I would reassemble the laser pointer in the manner that i just described and the laser pointer worked fine. It would periodically fall out and I would have to do this again and it fixed it every time.

Well, one day my GF had it fall apart on her and she tried to do what I did to fix it except that she had no idea what i was doing and just tried this and that to mimic what she saw me doing and now it doesn't work at all. When I opened it up i noticed that the stripped portion of wire was no longer there, as if she had accidentally ripped them off or that the wires potentially burnt up if she shorted it out (not sure if 2 AA batteries would burn up wire though). One more thing to add is that when I opened it i saw the black wire located inside the brass colored metal that has the 3 wires leading into it from the circuit board. Not sure if this could have potentially completed a circuit and fried something...

So i stripped the wire again and when i try to do the method that i described before no light comes out whatsoever. I tried using a DMM to see if anything made sense to me but I'm completely lost. I also tried to power it as described via using tape and batteries to remove the casing from the circuit but still no light whatsoever.


With all that said, does anyone have any suggestions on how to diagnose what is wrong? My fear is that she fried a component while guessing around but I don't know what to look for with the DMM...

Thanks in advance!



Last edited by rtjones; 07-02-2010 at 04:01 AM.
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Old 07-02-2010, 11:00 AM #2
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Default Re: Broken blue/violet laser pointer! Please help!

You know, photos help a lot.
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Old 07-03-2010, 12:39 AM #3
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Default Re: Broken blue/violet laser pointer! Please help!

As Bionic-Badger says, photos will help.

If you're in the UK, I'll have a look for you.

M
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