Kenmore Microwave Not Heating Food

What we have heard in the past is when the microwave starts door closed and timer started it then turns on with a noise clunk and then the food is heated but now that noise no longer happens and the food is still cold.

Kenmore microwave not heating food.

If the diode burns out the magnetron won t receive enough voltage to operate preventing the microwave. If the voltage is normal then it s time to replace the magnetron with a new one. The diode converts the a c power output of the transformer to d c doubling the voltage to nearly 5 000 volts. Our microwave model 721 8965581 is not heating any food.

This high voltage powers the magnetron to heat the food. This is the part that makes the heat to cook the food. Always put safety first when dealing with electricity. Lights timer display all work.

Get shopping advice from experts friends and the community. When the voltage drops below 215 volts the microwave does not heat the food well enough. Easiest fix you can find. How to test microwave magnetron with a multimeter.

The diode converts the a c power output of the transformer to d c doubling the voltage to nearly 5 000 volts. If it is broken it may blow a fuse in your microwave which could lead to other components failing. Any idea what went wrong. A new and better video update for the previous one where i explain how to fix your microwave that works but doesn t heat.

Quick troubleshoot and what you may need to fix video. Kenmore microwave model 721 80012401 it wont heat up food kenmore microwave model 721 80012401 it won t heat up food at all. A microwave that does not heat up may have a broken magnetron. My kenmore microwave is not heating.

When the diode fails it is often visibly burned out. This high voltage powers the magnetron to heat the food. I have a kenmore microwave 709 80333310 that i bought new and have used about two months. The light fan rotating table are working.