Thank you for your question.
I am sorry you are having a problem with your microwave. Without a model number, I can only give you general information. Usually when a microwave starts when the door is closed, it is because of a stuck relay on the main control. The main control would have to be replaced. We do not recommend repairing the microwave yourself because of the dangers of repairing them. The microwave generates extremely high voltage. The capacitor can store this voltage even when the unit is unplugged. I hope you understand our policy on microwaves. Our number one concern is your safety. It is strongly recommended to have the microwave repaired by a service technician. You can have the microwave repaired at your home by a Sears technician. Here is a link for the website:
Sears Home Services
Depending on the age and the condition of the microwave, you may consider purchasing a new one. The price of microwaves has gone down a lot in the last few years. Please click on this link to view all of the
Please let me know if you need further assistance.
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