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Garage door bouncing up.
A properly balanced door will hold the halfway position without assistance.
This is almost always the result of a dirty or obstructed safety feature.
This brain can wear out in time so you could need a replacement.
Then lower the door about halfway.
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Your garage door s logic board is the brain of your garage door opener.
Try making small adjustments.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
This is related to the up limit switch.
T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener.
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.
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.
Your garage door sensor works by having two photo sensitive devices on either side of the garage door.
To know how to balance a garage door first disengage the opener from the door by pulling the opener release handle see opening photo.
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.
If the door rides back up the springs are under too much tension.
Get logic board replacement.
You push the button to close the garage door.
2 brace the open door.