If your microwave's turntable motor has stopped working, there are a few things you can try to fix it. First, check to see if the motor is getting power by testing it with a multimeter. If the motor is getting power, then the problem may be with the motor itself or with the drive belt that turns the motor. If the motor is not getting power, then the problem is likely with the wiring. You can try to fix the wiring yourself, but it's best to call a professional if you're not comfortable working with electrical components.