This is my first post here.
I have a Suncoo 40w laser engraver.
I bought it 1 year ago and i havent changed a thing on it.
It was working fine but a month ago suddenlt it is not recognised by PC and it keeps saying that machine is doconnected.
I have bought a new m2 nano board along with usb key but same situation.
I am suspecting faulty power supply.
Any ideas / suggestions?