Whirlpool Microwave Magnetron (W10818686)

The Whirlpool Microwave Magnetron is the core component responsible for generating the microwave energy that heats your food. It works by converting electrical power into high-frequency microwave radiation, which is directed into the cooking cavity to warm or cook food from the inside out. This part is used in Whirlpool microwave and hood combo units mounted over the range.

The Whirlpool Microwave Magnetron can fail from age, repeated overheating, running the microwave empty, or damage caused by arcing inside the cavity. Power surges or a failing high-voltage capacitor or diode can also stress the magnetron and shorten its lifespan, leading to partial or complete loss of heating ability.

Watch for these symptoms to determine if the magnetron may need to be replaced:

- Microwave runs but food is not heating or warming at all

- Food takes much longer than normal to heat through

- Burning smell or smoke coming from inside the microwave during use

- Loud buzzing or humming sound while the microwave is operating

- Sparking or arcing visible inside the cooking cavity

- Microwave shuts off mid-cycle or trips a breaker during use