Cloudray 90-120w Laser Power Supply Not Getting to Firing Voltage

Community Laser Talk
1

Ordered a Cloudray 90-120w LPS from Amazon last year to replace the proprietary one that came with the laser. Went with cloudray since it comes with a built-in ammeter that connects with my ruida controller and displays on the screen. When trying to fire the laser the voltage only gets to 17kV even though it is rated for 40kV, and 17kV is not enough to fire my tube. Changing power settings does not change the voltage. The tube is brand new and should be good. This is the last thing to get my laser running, and Im at my wits end trying to figure it out. Any suggestions or advice would be appreciated.

Edit: Since I bought it from Amazon and not directly from Cloudray, Cloudray customer support will not help me.

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First is contact the vendor, even with Amazon, there is a vendor you can contact and advise them of the issue. They might just replace it.

Worst case, I hope you used a credit card…

Once you started that then you can check other things.

The lps has to reach trigger voltage before it will lase, so my guess is the lps is faulty.

Does the lps current meter show 0 or some amount of current?

There is an internal current limiting adjustment or pot, I doubt the internal pot is set low, you usually have to lower it.

What kind of percent power are you attempting to lase?

Has the tube ever lased for you?

:smiley_cat:

3

I tried contacting the vendor (Cloudray store on amazon) and they said since i bought it from a “third party” they do not have support for it. Cant return it since its past the return window. Current meter is at 0mA and voltage is 17kV. Any percent leads to the same result. The tube is brand new but have not been able to test it. Got the machine for free with the controller and some other things taken out of it, so i have been trying to Frankenstein it back together.

4

Unplug the signal connector (green) to the lps and see if the test button (red) will cause it to lase.

test-lps-connector
test-lps-connector1500Ă—1229 120 KB

If it still reads 17kV, then it’s likely an lps issue. Once you go past the controller, it’s difficult to test the lps or tube.

If it lases we can check how the controller is wired or working.

What percent power are you attempting to have it lase?

:smiley_cat:

5

Im currently out of town for a week. From what I remember it fires when the test button is pressed. Everything should be wired correctly according to both the LPS manual and the Ruida manual. I will test and report back when I get back home.

Also, I believe you helped me troubleshoot a separate issue on Reddit. Thanks for helping out again!

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