The Plate of the Microwave Doesn’t Spin
Microwave ovens have a rotating motor below their plates which controls the rotation of the spinning tray. Thus the most probable cause of the problem is a worn-out or burned motor. Luckily, this part can be easily replaced. However, if the microwave’s motor is not defective, this points out that the fault is in the main control board. If the control board is working, then the problem could be caused by the touchpad or by the control panel.