JayR
I am in a similar situation.
I would suggest to plug all the externals into a separate power supply strip by themselves.
I just got a LC1390N 80 watt and have no power at all, water chiller, and laser look great-
but the second I turn it on- the switch in the back ( the gcfi or circuit within the machine) immediately shuts it down.
So interested what you come up with. My power supply is fine- so unsure what is going on.
s