microwave would not heat

The part that made this difficult was that you had to unmount the microwave first. It's a bilt bulky.
Once the unit is on the table, you have to take the case off to get to the inside. Then you have to make sure the high voltage capacitor is discharged before poking around. I had to remove the transformer in order to get to the magnetron. Part fit perfectly. Stirrer was easy since you could get to it from the inside of the microwave. Reassembled and unit is working again. The hard part was really mounting and unmounting the unit.