Kenmore Microwave Not Heating Up Food

If the diode burns out the magnetron won t receive enough voltage to operate preventing the microwave.

Kenmore microwave not heating up food.

A microwave that does not heat up may have a broken magnetron. When the voltage drops below 215 volts the microwave does not heat the food well enough. Lights timer display all work. When the diode fails it is often visibly burned out.

This high voltage powers the magnetron to heat the food. If it is broken it may blow a fuse in your microwave which could lead to other components failing. The diode converts the a c power output of the transformer to d c doubling the voltage to nearly 5 000 volts. If the diode burns out the magnetron won t receive enough voltage to operate preventing the microwave from heating.

Br i have a kenmore microwave 790 83337710. This is the part that makes the heat to cook the food. Easiest fix you can find. How to test microwave magnetron with a multimeter.

If the voltage is normal then it s time to replace the magnetron with a new one. The easiest way to determine whether your microwave is failing is to try to heat a food item. This high voltage powers the magnetron to heat the food. If the microwave doesn t heat or it heats more slowly than it should this indicates that it is.

Once the voltage is normal the microwave oven will start to work fine. A new and better video update for the previous one where i explain how to fix your microwave that works but doesn t heat.