Microwave-not-heating-up, when your microwave turns on but does not heat up, it may mean the door switch is broken. the door switch signals other microwave components to supply power when closed, and to stop heating when open. the door switch can also be called an interlock switch.. The diode converts the a/c power output of the transformer to d/c, doubling the voltage to nearly 5,000 volts. this high voltage powers the magnetron to heat the food. if the diode burns out, the magn... etron won’t receive enough voltage to operate, preventing the microwave from heating. when the diode fails, it is often visibly burned out., the most likely reason why your microwave is not heating up is either the magnetron is damaged or the components that power the magnetron are damaged. mangetron assembly is the device that generates the microwave heat. so if you are sitting there and wondering why is my microwave not heating up, then the short guide here will help..
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., check the power. verify the power cord is connected to a grounded, operational outlet. check the outlet. if you are unaware if it's working, plug in a household lamp or other small appliance to verify that the outlet is working..
The microwave does not heat well, does not heat at all, or heats “from time to time” if the voltage in the power grid is less than 210 volts, then the microwave power is reduced. this is especially true for countryside and rural areas.