Steve Kissell wrote in
k.net:

Last evening while using our seven year old microwave there was a loud
bang and everything stopped.
I determined that my circuit breaker tripped and the microwave would
not restart.

Initially, I thought I detected a black powder residue near the
microwave door, but upon taking it down from the cabinet over the stove
and taking the cover off, I can't find anything that looks "fried" .

An appliance parts store nearby suggested that I have a technician (they
recommended) look at the magnetron.

Question:
Would that be the circular part about the size of a silver dollar and
3/8 " thick that is located in the base of the oven at its center?

It has two very thin wires coming out of it.

My 20 yr old Sharp MW had a loud snap,then went dead.Problem was a shorted
HV cap.I replaced it,the NV diode,and the open internal 30 A fuse,total
cost $26.00.
I got the parts at a local apppliance repair store.That was in 2000.
The MW still works today,gets used daily.

Since you can't identify electrical components,I suggest you take it to a
local apppliance repair store and let them repair it.


--
Jim Yanik
jyanik-at-kua.net