Garage Door Falls Back Down
If the garage door suddenly comes crashing down and will not go back up this is usually the result of a snapped cable.
Garage door falls back down. The garage door can fall too quickly as a result of springs that have become too loose. When the door opens it sometimes falls back down part way. This is almost always the result of a dirty. I have had it serviced twice spring tension and limits adjusted by local overhead dealer but problem persists.
If your garage door falls too fast when you decide to close it then the problem may be one of these. The cables experience wear and tear after years of helping to control the movement of the door and the tension of the springs. It hits top then bounces back down rather than stopping in fully open position. By wade shaddy updated december 19 2018 you push the button to close the garage door.
Snapped cables should be professionally replaced before you try to use the door again. It goes partway down reverses direction and goes back up again. Some models have two screws labeled. Locate the limit switch adjustment either on the back of the opener or behind the light bulb s lens cover.
Another cause of this problem is poorly installed springs and cables or a damaged garage door track. Set a safety ladder under the garage door opener. Also it could be due to springs and cables that have been poorly installed or a damaged garage door track.