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I will, thanks!

The PSU never actually died; I replaced it in the hope that it would somehow magically fix the problem. The new tube (800mm) was used on the old power supply and the new one, and the machine ran...

Okay, thank you for trying to help.

I'm sorry, Bill, I don't know what information is helpful and what's just extraneous, but I do appreciate your help.

The tube had water where it shouldn't, and electricity was arcing to the case,...

Thank you, Matt, and thanks again, Bill.

I've changed the tube, which was bad, and the power supply, which didn't change anything. I've also tightened everything, but I will go through and try...

Yes, I had the mirrors well-aligned and had no problem with the laser test-firing before it mysteriously disappeared. I have tried it with the power set as high as 95%, which is significantly higher...

Thanks very much! I will email John Wang and check out RDWorkslab.com . I'll also keep my eye out for that program; maybe that will be better for me than RDWorks. I feel like I understand RDWorks,...

Does that make sense if the Dot and Pen modes are both working? I don't know how to test the mirror alignment if I can't even get the laser to fire when I hit the Test button.

Thanks for your reply! The machine is a Shenhui (one of the ubiquitous ones everyone seems to get on ebay), and the manual is pretty much useless. It did cut fine at first, then the Cut mode stopped...

I'm hoping someone here can help me. (I did not find the answer to this in other threads that I searched, though I may be overlooking it.) My issue is that I have a 50 watt Chinese laser that cuts...