My Fiber Laser suddenly stopped output? No Red Framing/No Engraving Whatsoever?

I have Raycus 30W laser just bought last month from Cloudary website. It was working all good till today and suddenly stopped working at all. No red laser framing No laser output. Everything looks normal, controller gets connected as normal. lightburn shows ready, Laser Switch turns on board, fans run…looks all good there but no output? Any Idea. I have checked focal length and all other parameters.

You can reinstall Ezcad to ensure the software is ok, then you can test the 24v switch power supply for lasers. Maybe the voltage occurs problems.