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Old 05-30-2010, 07:40 AM   #1
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Default FIXED! - Omnichrome HeCd laser (pics)

Hi all....
I'm still trying to get a HeCd laser I have up and going again. I've put it on LPF and did get some very good help on what to check, etc, but still not luck with getting it going.
Does anyone here know of where I could take it or who I could contact preferably near Melbourne, Australia that might be able to get it going for me? Thanks heaps.
Here are some photos of the laser......
The power supply;


The head;





The problem is that I'm getting three blinks for the error light after system is turned on and self check completed. This mean 'filament current error'.

Last edited by timelablasers; 07-17-2010 at 06:41 AM.
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Old 07-17-2010, 06:48 AM   #2
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Default Re: FIXED! - Omnichrome HeCd laser (pics)

Problem FIXED!!!!!
After months of looking through the laser head and power supply with a completely puzzled look on my face, putting it away, coming back to it, giving up again and so on.....I have finally found the problem and the laser is now working sweetly.
The problem was so simple. A wire inside the head was pressed up against and rubbed through to the tube chassis creating a short and returning an error to the PSU. Moved the wire.....problem solved. Wow! And to think I almost gave up on this thing entirely. It was very close to having the tube removed for display purposes and the rest being scrapped.
Many thanks goes to the guys in the other thread I started about this laser who generously offered their knowledge and expertise as much as they could on these forums.
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2 x Lab Style modules 150-200mW 650nm
50 x HeNe Lab, Head, bare tube 1-35mW 632.8nm
1 x ArKr Omnichrome 100mW 568nm
12 x DPSS Lab and module style 10-100mW 532nm
3 x HeNe Heads 1-5mW 543.5nm
12 x Ar Ion 20-80mW 488nm
2 x DPSS 10-20mW 473nm
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Old 07-17-2010, 06:55 AM   #3
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Default Re: FIXED! - Omnichrome HeCd laser (pics)

Pics or it didnt happen
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Old 07-17-2010, 06:56 AM   #4
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Default Re: FIXED! - Omnichrome HeCd laser (pics)

Quote:
Originally Posted by SpyderFire View Post
Pics or it didnt happen
Pics or GTFO
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Old 07-17-2010, 06:57 AM   #5
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Default Re: FIXED! - Omnichrome HeCd laser (pics)

Quote:
Originally Posted by SpyderFire View Post
Pics or it didnt happen
.....They will be here later on tonight Australian time
__________________
2 x Lab Style modules 150-200mW 650nm
50 x HeNe Lab, Head, bare tube 1-35mW 632.8nm
1 x ArKr Omnichrome 100mW 568nm
12 x DPSS Lab and module style 10-100mW 532nm
3 x HeNe Heads 1-5mW 543.5nm
12 x Ar Ion 20-80mW 488nm
2 x DPSS 10-20mW 473nm
2 x Ar Ion 25 & 100mW 457-514nm Multilines
2 x 445nm 1W & 300mW labs
1 x HeCd 50mW 442nm
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Old 07-17-2010, 09:38 AM   #6
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Default Re: FIXED! - Omnichrome HeCd laser (pics)

OK....some photos of it working....
You can just see part of the glowing laser tube through the cooling slits.


The beam looks almost completely clean in reality and is a purple colour.., but not so through the camera lens.


Very hard to pick up the actual colour of the laser light with the camera.


Looking towards the tube output end
__________________
2 x Lab Style modules 150-200mW 650nm
50 x HeNe Lab, Head, bare tube 1-35mW 632.8nm
1 x ArKr Omnichrome 100mW 568nm
12 x DPSS Lab and module style 10-100mW 532nm
3 x HeNe Heads 1-5mW 543.5nm
12 x Ar Ion 20-80mW 488nm
2 x DPSS 10-20mW 473nm
2 x Ar Ion 25 & 100mW 457-514nm Multilines
2 x 445nm 1W & 300mW labs
1 x HeCd 50mW 442nm
1 x 405nm 130mW lab
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Old 07-18-2010, 05:32 AM   #7
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Default Re: FIXED! - Omnichrome HeCd laser (pics)

Wow. Very nice. This, HeCd, is still the gap in my collection... (well, also maybe KrIon)

( I just won an "unknown condition" HeCd (head only) Omnichrome 74 on ebay, which I'm suspecting will never, ever work But the price was right ($40 shipped) -- I'm still expecting a box full of broken glass )

I really gotta ask, Rob - Do you have a 445 running yet? I really would be interested in seeing the wavelength difference visibly between 445 and HeCd 442. Probably not much, but... I've been surprised before. (632.8 vs 640).

With Australia's tight rules on lasers, it's really amazing, the ones you come up with If I didn't live "as far as humanly possible" from you, shipping-wise, I'd probably be trying to convince you to sell a lot more of these
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