The trolley may be jammed into stop bolts.
Sears 1 2 hp garage door opener troubleshooting.
Unplug the garage door opener and check the wiring connections on the panel.
If there are any obstructions preventing the sensors from communicating move them out of the way.
Garage door springs are broken.
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Repair the garage door if it doesn t travel smoothly.
Sears 39 18205sr 1 2 hp garage door opener troubleshooting 1.
Unplug the garage door opener to reset the logic board.
Pull the emergency door release and check the up and down travel of the garage door for binding.
Masterremote 2 for sears craftsman 139 53753 garage door opener remote 315mhz 139 53985d.
Check the sensors on either side of your garage door.
Pull or push on door while motor is humming to release jammed condition.
The sensors have to be able to detect flashing lights from one another for the garage door to open and close properly.
Allow the motor to cool for about 15 minutes before restoring power and using the garage door opener.