Another cause of this problem is poorly installed springs and cables or a damaged garage door track.
Garage door falls back down.
The cables experience wear and tear after years of helping to control the movement of the door and the tension of the springs.
It goes partway down reverses direction and goes back up again.
If your garage door falls too fast when you decide to close it then the problem may be one of these.
It can also be due to to cables that are broken.
If the garage door suddenly comes crashing down and will not go back up this is usually the result of a snapped cable.
When the door opens it sometimes falls back down part way.
It hits top then bounces back down rather than stopping in fully open position.
I have had it serviced twice spring tension and limits adjusted by local overhead dealer but problem persists.
This is almost always the result of a dirty.
When your garage door falls too quickly it is a symptom that something is loose of broken.
Snapped cables should be professionally replaced before you try to use the door again.
The garage door can fall too quickly as a result of springs that have become too loose.
Set a safety ladder under the garage door opener.
Locate the limit switch adjustment either on the back of the opener or behind the light bulb s lens cover.
Some models have two screws labeled.