Ensure that the unit is plugged in the door isn t locked and if you are using a remote.
Garage door buzzes but won t open.
It typically has a small ball at the end.
Tug on it hard and it.
If the door only moves a few inches and stops the rpm sensor could be bad.
Although rare a failed drive motor is another reason why the door won t open.
It can also be caused by attempting to use the garage door opener with a broken torsion spring.
Many garage doors have a powerful torsion spring located horizontally above the door.
If the motor buzzes and doesn t move an unobstructed and disconnected trolley replace the drive motor.
When the door is lowered the spring winds up tightly creating a pulling force that helps lift the door up.
If the motor doesn t run at all you may need to replace the garage door opener logic board.
How to fix a chain drive garage door when it won t open 1.
Unfortunately this is just something that happens with usage over time.
Make basic checks first.