If you hear the motor spinning but not the blades, check the main gear. One crash can knock out enough teeth to cause this problem. You have to remove the landing gear and battery tray to get to it. If the motor isn't spinning, check the motor by applying voltage to it. If that works, swap out the receiver. I've gone through all of the above over the course of time.
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If you hear the motor spinning but not the blades, check the main gear. One crash can knock out enough teeth to cause this problem. You have to remove the landing gear and battery tray to get to it. If the motor isn't spinning, check the motor by applying voltage to it. If that works, swap out the receiver. I've gone through all of the above over the course of time.