My air conditon fan motor shuts off and the motor is very hot to touch. I can here the hum sound then I will shut the power supply off, hoping this will reset it self. I turn ot back on after several hours, and the humming sound continue but the fan is not moving. I will help the fan by using a stick to turn the blades, and the fan will start, but turn at a slow speed. Do I need to change out the motor...