The microwave will run for a minute and then shut off

The microwave is not supposed to shut off if you have food in it. it is designed to stay running so you will not forget your popcorn.

Could possibly put a cup of water in with it. Water has a high heat capacity and could probably keep the microwave from overheating.

Missy Uhland Bauman,

I understand that you are hearing a buzzing noise from your microwave, even though the door is shut and and it is not running. I would suggest to give the appliance a hard reset. You will do this by either unplugging it or cutting the power off at the circuit breaker for 3-5 minutes. After the 3-5 minutes, bring power back. If you are still hearing a buzzing sound, I suggest either contacting the manufacturer or your local authorized technician.

-Best Regards-

It sounds like the thermal fuse may be defective, or the fan is not running, or the magnetron is getting to hot. If there are any heat issues the thermal fuse will cut power and reset in 5 minutes.

It sounds like the magnetron is not working properly and the temperature sensor is expecting temperature rise, it is not getting any and shuts down.
Hope that expalins it for you.

I'd be careful because you do not know what caused it to spark. How old is the microwave? Do you need a new one?

If the mag overheats because its not being cooled it will shut down until its cool.

If the fan is turning slow you can try oiling it but it likely needs replacing.

Another thing that causes this is that the exaust port is blocked because its upagainst the wall and the hot air can not escape.

to trouble shoot hold the door securely shut for longer than 5 min to see if it runs longer if it does the you should replace the interlock devise

This sounds like the unit is defective and if I were you I would return for replacment!

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