Garage door seal is loose or broken a leaky.
Garage door bounces up when closing.
After clearing any obstruction from the track try lubricating the rollers using wd 40.
Get logic board replacement.
It goes partway down reverses direction and goes back up again.
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.
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.
I was wondering if it was the new springs that is causing the bouncing.
This brain can wear out in time so you could need a replacement.
Your garage door s logic board is the brain of your garage door opener.
A careless or rushed parking job can cause the car s bumper to block the sensor.
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.
Since then the garage door was intermittently bouncing when the door is closing.
Your garage door sensor works by having two photo sensitive devices on either side of the garage door.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
If the pressure reaches a dangerous level caused by blocked rollers the door will reverse.
By wade shaddy updated december 19 2018 you push the button to close the garage door.
The bounce occurs at the 1 3 or 1 2 mark.
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.
To adjust the switch there is usually a screw on the motor unit that when turned will increase or decrease how far the door descends when closing.
Most garage doors contain a secondary safety mechanism to sense undue stress while closing.