The sound produced by a microwave oven can come from various sources within the appliance. Here are a few common sources of microwave sounds:
Cooling fan: Most microwaves have a built-in cooling fan that helps dissipate heat generated during operation. The fan is typically located at the back or side of the microwave and may produce a humming or whirring sound when active.
Magnetron: The magnetron is the component responsible for generating the microwaves that heat the food. It is a vacuum tube that converts electrical energy into electromagnetic waves. The magnetron can produce a low-level humming or buzzing sound during operation, which is normal.
Turntable motor: Many microwaves feature a rotating turntable to ensure even heating of the food. The turntable motor, located underneath the microwave's floor or inside the cavity, drives the rotation. It can generate a soft humming or mechanical noise when in use.
Door switches and mechanisms: Microwaves have safety mechanisms to prevent the appliance from operating when the door is open. These mechanisms consist of door switches and latch hooks. When you open or close the microwave door, you may hear clicks or a subtle mechanical noise as the switches and latch engage or disengage.
Control panel and keypad: The control panel and keypad on the microwave allow you to set the desired cooking time and power levels. Pressing the buttons on the control panel can produce audible beeps or clicks.
It's worth noting that while some level of sound is normal during microwave operation, if you notice unusually loud or abnormal noises, it may indicate a potential issue with the appliance. In such cases, it is advisable to consult the microwave's user manual or contact the manufacturer or a professional technician to diagnose and address any underlying problems.