The most likely.
Garage door opener starts to close then stops.
There s a small lip on the outer perimeter of the lens.
If your garage door opens and suddenly stops it might be because of your logic board.
In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
Locate the lens on each side of the garage door at the bottom.
Disconnect the garage door opener from the door and go through the troubleshooting routine on the garage door repair page.
Doing this can save you some amount of cash.
Clean the lenses with the cloth.
Holding the button down on the inside of the garage bypasses the obstruction safety device of the garage door opener.
Adjust the close limit adjustment screw on the door opener motor in small increments until the door stops upon touching the floor.
How to fix a garage door that keeps reversing.
Garage door reverses immediately after touching the floor when the garage door immediately leaps upward after touching the floor this too is a close limit switch problem.
The travel limit switch mounting setscrew can vibrate loose allowing it to move or fall off.
Close the garage door with the opener and watch it closely as it closes.
Fold a soft cloth around your finger.
You might need to consider replacing it if your door is not working properly or you may purchase a new opener.
The lenses will most likely be attached to.
The 3rd cause is a malfunctioning travel limit switch.
The logic board receives and responds signals to any remote.
In fact you really shouldread the entire garage door repair it will make troubleshooting later much easier.
This fails to tell the door it is time to stop and the opener tries to drive the door into the ground again exceeding what the door believes to be allowable tension.
If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.