[Annie Bondy]

I am having trouble with my microwave. For the past few days, everything seems to work except the heat. I have read that it may be the door switch? Can anyone explain? It seems to have power, the timer, light, fan etc. all work and when I turn it on, there is a hum, just no heat??
Thanks for your help.

[kayakcrzy]

When you say a hum, do you mean you don't hear the fan coming on in the microwave? If the fan comes on, and it sounds like it is running, it could be a magnatron. The sad thing is the microwaves are so cheap, they are usually not worth repairing. It would not be a switch if it comes on at all. Tom ApplianceEducator.com

[Annie Bondy]

Hi Tom,
Thanks for the reply. The microwave and fan do come on, just no heat. Does that sound like the magnatron? THe microwave was $500.00. Would it be cheaper to replace it or the magnatron. We have a built in, so have to have one of similar size.
Thanks again,
Annie