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Garage door bouncing up.
If the door rides back up the springs are under too much tension.
T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener.
Move the garage door up and down until you find a place where the door stays suspended when you let go.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
A properly balanced door will hold the halfway position without assistance.
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This brain can wear out in time so you could need a replacement.
To know how to balance a garage door first disengage the opener from the door by pulling the opener release handle see opening photo.
If these can t see each other when the door is almost shut it will send a signal to the garage door motor to open back up.
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.
Try making small adjustments.
A careless or rushed parking job can cause the car s bumper to block the sensor.
Then lower the door about halfway.
It s important to get this switch at just the right distance from the motor so that the door is able to close all the way but the motor also knows to stop running.
It goes partway down reverses direction and goes back up again.
You push the button to close the garage door.
This is almost always the result of a dirty or obstructed safety feature.
Your garage door sensor works by having two photo sensitive devices on either side of the garage door.
2 brace the open door.