Working normally before kids went to school. Upon returning wife noted "dead". I pulled it out of the cabinet and removed the cover. Fuse blown. Found schematic attached to chassis and found a reference to blown fuse caused by interlock switch.
I replaced the fuse and with the cabinet door closed, plugged the machine in. I operated it and the lights came on and the machine operated normally. As soon as I opened the door the fuse blew.
So I ordered the primary interlock switch and the monitor switch. WB24X824 and WB24X830, Upon removing the primary interlock switch I noted that the switch was broken, the switch actuator stuck in the compressed position. Thought I was home free. Went ahead and replaced it and the monitor switch since I had both. The monitor switch tested fine but replaced it anyway.
This time I plugged the machine in with the door closed as last time. This time the machine clicked and the countdown began but no interior light and no microwave (magnatron) activation. Upon opening the door, the fuse blew again.
I tested the switches with door open and closed and the primary and monitor switch are both showing continuity with the door open and an open circuit with the door closed. The secondary switch is an open circuit with the door open and has continuity with the door closed.
I am at a loss and the wife is losing her patience. Please help. 