Microwave runs constantly

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.

I'd look for a defective relay or shorted triac on the control panel circuit board. Either could cause this problem.

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1.check fuse

2.check relay (microwave oven magnetron)

3, check switches of the doors

It could be a door switch that arced open or closed. It could be a relay that arced open or closed etc

Check the door switches with digital meter, usually find one bad one. Set meter to ohms and test, some will be normally open and others closed, check with the door open and closed.

There are one or two door switches that are probably defective, that must be replaced.

We have a similar problem! It sounds like a problem with the microswitch inside the unit that the door is suppose to engage when closed. If not engaged properly, it will not cook. We had the switch replaced last March but it has started acting up again. We can press in on the door and/or lift it slightly and it will cook. Try putting time on the counter and hit start. It the word "cook" appears then try moving the door slightly and see if the turntable starts turning. If not, then you may have a more serious problem. Good luck!

the door switches need adjusting. remove casing and adjust door switches

It seems the micro switch for the door close have moved from and is not aline the door clip or the micro switch is faulty

This is normally 1 of the interlock door micro-switches not working.