A garage door motor can wear out over time. If you don't know what to look for, diagnosing problems with a garage door motor can be tricky. However, if you know what to look for, you can often find and make repairs on your own without the need to call in professionals to make repairs for you.
Problems with Your Obstruction Sensors
If your garage door will start to close and then stops even when there is no obstruction present, the problem likely does not lie with your motor.