What would cause my microwave to stop heating?
If your microwave oven doesn’t heat, you may have a problem with the magnetron. This component is part of the high voltage circuit and provides the microwaves that generate the heat. If the magnetron is defective, the unit may blow a fuse, or you may still have all other functions operating normally.
How do you test a microwave motor?
First, check whether the turntable motor is receiving the proper voltage from the control board. To do this, connect a volt meter across the two terminals of the motor and switch on the microwave(WARNING: WIRES WILL BE LIVE AND DANGEROUS. DO NOT ATTEMPT WITHOUT PROPER TRAINING).
How do you test a microwave thermostat?
Safety Thermostat You will have to remove the case of the microwave to access it. To check it, disconnect power from the microwave. Then remove the wires from the thermostat and check for continuity across it with an ohmmeter. If it is open replace it.