"Thomas" wrote in message
. net...
Hello. I have a less then 3 year old above the range microwave that all
of a sudden wont heat up. No flashes or pops, it just stopped heating up.
Everything else works, turns on, all the buttons, lights and fan. I
noticed that although my warranty was only one year that the magnetron
tube is under warranty for 8 years. Would the magnetron tube cause it not
to heat up? Im not really sure where to start with this so I thought I
would start here. Thanks for any help.

Thomas

Could be the magnetron, but there can be a dozen other reasons too, even a
faulty keypad.