Br i have a kenmore microwave 790 83337710.
Kenmore microwave not heating up food.
A microwave that does not heat up may have a broken magnetron.
If the microwave doesn t heat or it heats more slowly than it should this indicates that it is.
This high voltage powers the magnetron to heat the food.
When i push start it sounds like it working but the turntable doesn t move and it doesn t heat.
Once the voltage is normal the microwave oven will start to work fine.
Easiest fix you can find.
My kenmore microwave is not heating.
This high voltage powers the magnetron to heat the food.
When the voltage drops below 215 volts the microwave does not heat the food well enough.
If the diode burns out the magnetron won t receive enough voltage to operate preventing the microwave from heating.
When the diode fails it is often visibly burned out.
If it is broken it may blow a fuse in your microwave which could lead to other components failing.
How to test microwave magnetron with a multimeter.
The easiest way to determine whether your microwave is failing is to try to heat a food item.
A new and better video update for the previous one where i explain how to fix your microwave that works but doesn t heat.
The diode converts the a c power output of the transformer to d c doubling the voltage to nearly 5 000 volts.
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.