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Garage door bouncing up.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
This is almost always the result of a dirty or obstructed safety feature.
Try making small adjustments.
If that point is more than four feet or less than three feet above the ground you will need to balance the door.
Get logic board replacement.
This brain can wear out in time so you could need a replacement.
A careless or rushed parking job can cause the car s bumper to block the sensor.
Your garage door sensor works by having two photo sensitive devices on either side of the garage door.
If the door rides back up the springs are under too much tension.
Your garage door s logic board is the brain of your garage door opener.
Then lower the door about halfway.
You push the button to close the garage door.
It goes partway down reverses direction and goes back up again.
T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener.
2 brace the open door.
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Sometimes the sensors will be in alignment and just as the door gets close to being shut it will vibrate enough to push one sensor off.
This is related to the up limit switch.
Move the garage door up and down until you find a place where the door stays suspended when you let go.
To know how to balance a garage door first disengage the opener from the door by pulling the opener release handle see opening photo.