Craftsman 1 2 Hp Garage Door Opener Troubleshooting. Operation at other than 120v 60 hz will cause opener malfunction and damage. Check the connection to the sensor and follow the wire all the way to the terminal on the back of the opener.
Door coasts after it has come to a complete stop. Up to 3.2% cash back use a wood screw or nail to hold looks in the open (unlocked) position. B) the motor is bad.
