A-mazing!
the problem you’re having looks very close to mine! and you’ve fixed it!!!
Im going to check my wiring on the weekend I think. I don’t have time right now, unfortunately. Out of curiosity, if yours one of the orange co2 lasers. I think they are the “newer” models and that’s what I have. Would be funny if they all came from the same factory with the same problem
“PWM-signal” is that done via LB?
Also, where did you find the wireing diagram, could you post it>
btw, my PSU is a ZYE too, but a slightly different model - the MYJG50W