I had the Message in here a couple of days ago on the microwave oven, saying that I had replaced the diode and the capacitor and ir still would not work. Well after listening to your replies and doing some more checking on my own I decided it was the magnetron. So because it has a ten year warrenity from GE, I gave them a call even though they had supplied one three months eariler. They said the same thing that they told me then. "You can not replace it yourself, you must get a GE service man to do it(only much stronger this time), which you have to pay for".Well. after much back and forth, they agreed to sent it out to me free of charge both times. Short story long, It now works again. Thanks
Retired