To know how to balance a garage door first disengage the opener from the door by pulling the opener release handle see opening photo.
Garage door bouncing up.
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.
This is almost always the result of a dirty or obstructed safety feature.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
You push the button to close the garage door.
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If the door rides back up the springs are under too much tension.
A careless or rushed parking job can cause the car s bumper to block the sensor.
If that point is more than four feet or less than three feet above the ground you will need to balance the door.
This brain can wear out in time so you could need a replacement.
This is related to the up limit switch.
A properly balanced door will hold the halfway position without assistance.
Your garage door sensor works by having two photo sensitive devices on either side of the garage door.
Get logic board replacement.
Your garage door s logic board is the brain of your garage door opener.
2 brace the open door.
Then lower the door about halfway.
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.
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Try making small adjustments.
It goes partway down reverses direction and goes back up again.