most microwaves do not have a "stirrer belt." Instead, they use a "stirrer fan" or "stirrer blade." The purpose of the stirrer fan or blade is to help distribute microwave energy evenly throughout the microwave's cooking cavity. This ensures that food is cooked or heated uniformly and prevents hot spots.
The stirrer fan or blade is typically located inside the microwave's cooking cavity, usually on the ceiling or the side wall. Its exact position may vary depending on the microwave model, but it is generally a visible component that rotates or moves during operation.
If you are experiencing issues with your microwave's heating or cooking performance, such as uneven cooking or heating, it is possible that the stirrer fan or blade is malfunctioning or obstructed. In such cases, it is best to refer to the microwave's user manual or contact the manufacturer's customer support for troubleshooting and potential repairs. However, please note that microwave repairs can be hazardous and should be performed by qualified technicians. If you are not experienced with microwave repair, it's safer to seek professional help.