1. First check the power socket, plug, and power cord for oxygen, shedding, and breakage. If not, plug it in and try out the machine.

2. When the motor is energized and does not rotate, it can be concluded that one of the two starting capacitors of the machine is caused by capacity failure. At this time, the wheel can be gently pulled by hand to rotate. In this case, usually only new products are available.

3. Another situation is that the motor does not rotate when it is energized, but it can rotate when an external force is applied, but there is a weak current sound in the motor, which is caused by a slight leakage of the starting capacitor. If the current is too high, the motor will not start at all. It was concluded that it was caused by a shorted boot capacitor. In the absence of professional instruments, you can first remove the capacitor, insert the two lead wires into the neutral and live wire jacks of the mains, charge the capacitor, and then remove the two lead wires for short-circuit discharge. If the discharge spark can be emitted, and there is a loud "click" sound at this time, it indicates that the capacitor can be used; if the spark and sound are weak, it indicates that the capacity of the capacitor has been reduced, and a small capacitor needs to be replaced or added. If the capacitor is damaged and short-circuited, this method cannot be used and must be replaced with a new product of the same specification.