I have a generic Chinese 130W laser cutter. My power supply failed more than a year ago, and I just finally replaced it with a new one (similar to this) that has a current meter on it.

When I fire the laser, it is only reading about 22mA, and it is not cutting at the speeds I would expect. I can't find a reference now, but if I remember right it should be drawing about 28mA. Does that suggest that the laser tube is dying, or is the new power supply suspect? I've adjusted the power output trimpot so the output is as high as possible.

Thanks for your help!

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