Replace Magnetron and then I the inverter unit after I discovered the unit still did not heat properly. Inverter had capacitor that was cracked and I found a diode that was flashing over the printed circuit board.
The microwave door would not stay latched, so it wouldn't come on.
The repair was easy, I just took off a few screws and found the broken latch spring. The real story is how easy it was to find the replacement spring from Partselect! I couldn't believe they had it, and even better yet, I ordered it one afternoon, and it came the next day with normal shipping! Unbelievable! Then I just popped it in and replaced the covers I had removed and it was working again!
The problem I have with changing the bulb is my microwave is an overhead one and therefore I cannot tip it on its side to easily replace the bulb. I have to drop the lid down and carefully install the new bulb from underneath.
The lady in the Nova Scotia call center should get all the credit for being able to identify the part I needed from only the very limited information I was able to give her. Employee of the month for her. She also had such a great can do attitude. Lawence Baier