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This is normal. Kenmore microwaves will stay running with fan and light on for a short time after food is cooked. The reason is to air out the microwave after cooking. Things like pop corn, Bacon etc. have strong smells after cooking. The ventilation helps to remove odors.
If you hear an unusual buzzing noise, the magnetron (the component that actually generates the microwaves) or other electronic module may be broken. This is not easily fixed; contact a service technician.
Sounds like the MW Emitter is not working or the wave guide is disconnected. If it is the wave guide then you can fix it yourself if you take the rear cover off. It is the pipe, which in cross section is quite rectangle shaped with rounded corners. It should be connected to the emitter at one end and the opaque guide cover at the other with no breaks. If the emitter is faulty then seek professional help.
The problem is caused by one of three things, the magnetron "heats food" the high voltage diode "sometimes shorts" or the high voltage capacitor " shorts"
Sounds like the magnetron has failed. This is the component that produces the microwaves that heats the food.
The cost of the magnetron is about 95% of the cost of a microwave oven.
Most people don't, for this reason, replace the magnetron, they replace
the whole oven which is probably what you will end up doing.
There is a possibility that the circuit that provides power to the
magnetron is faulty and you need to take it apart, find the proper
electrical leads and test them with a volt meter. To do this you have
to remove it from its mounting and take it apart. It is a fairly
lengthy process however.
clock,fan,sound, all seems good but no heat.
do u have a multi meter to do some testing??
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