Some quick troubleshooting… Do you have a volt meter?
I had the same machine, and while they’re an awesome machine, Myself and others have had to do some “clean up”, as they seem to be assembled By Drunken Monkeys or something.
Check the input power to the power supply. If it’s good, then Obviously, you have a power supply problem… If there is no AC even getting to the input of the power supply, chances are, a wire simply fell off of the switch.
The wire bundles tend to be very short, and I do not think China owns a proper screwdriver, as On My machine, when I took the E-Stop button out to check the power leads, they just pulled right out. They were not even tightened…I went through the whole machine, and like half of My screws were stripped, and several crimps just pulled off of the wire with little to no force required.
If it was working before, a loose connection could have simply arced enough times to break continuity.
Tech support is pretty lame. Go through the machine yourself, and familiarize yourself, so when something happens down the road, you have an idea of where to look.
The reason I suspect a bum connection, is that the LCD and fan are on the input side of the power supply. Normally, they will still work, but the output stage will be bad, when a Power supply gives up the ghost. The fact that you have no activity on the unit at all, leads me to suspect that you will not find AC power coming in.
The built in power outlets are quite often the culprit. on any machine… they’re the multi-functional 220 / 110 outlets. they have a bad habit of simply melting, as the manufacturers often use them as a splice block, and they act like a fuse.
You should have power to your 12 or 24V power supply, and to the laser Power supply, and the rear outlets… Find out where they all tie together, and I bet you find your problem.
I hope it’s an easy fix, and not a totally Dead PS. the waiting for stuff from China right now suuuuucks!