How to repair a broken brushless motor controller?

The brushless motor controller (also known as the driver) is a key component that controls the normal operation of the brushless motor. If the controller is broken, the brushless motor cannot function properly. The following are the repair steps for a faulty brushless motor controller:

Determining controller malfunction: Firstly, it is necessary to determine whether the controller has truly malfunctioned. This can be done by checking the controller's indicator lights, observing the motor operation, and other methods to determine if the controller has malfunctioned.

Check power supply: The controller requires a stable power supply. Check if the power cord is in good contact and if the power voltage is stable. If there is a problem with the power supply, it needs to be resolved.

Check the control signal: The brushless motor requires the correct control signal to function properly. Check whether the control signal reaches the controller, whether the control signal is correct, and whether it is distorted. If there is a problem with the control signal, it needs to be resolved.

Check the driver circuit: Check if the driver circuit is damaged, such as capacitors, relays, transistors, etc. If the driver circuit is damaged, the damaged components need to be replaced.

Check the protection circuit: Controllers usually have protection circuits, such as overcurrent protection, overvoltage protection, overheating protection, etc. Check if the protection circuit is working properly. If there is a problem with the protection circuit, the protective components need to be replaced.

Replace controller: If no faults are found or cannot be repaired in the above steps, the controller may need to be replaced.