Microwaves?

My Thorn Multiwave microwave is simply sitting there totally dead. No noise, no fan, no light--just as if it isn't plugged in.
I have checked all wiring, fuses and connections right into the machine and power is there. I have checked the three micro switches on the door and the small fuse behind the door lock. All OK.
Wiring is clean; no burning or flash anywhere. PCB is clean;no dry joints or burnt out diodes or caps. Looks good.
I'm simply sunk without guidance or a schematic.
Can anyone help,please?
Cliff