Your garage door sensor works by having two photo sensitive devices on either side of the garage door.
Garage door bounces up when closing.
Turn the down limit switch screw clockwise one turn with a flat blade screwdriver if the garage door closes and then begins to open back 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.
It goes partway down reverses direction and goes back up again.
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.
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.
Since then the garage door was intermittently bouncing when the door is closing.
The garage door will automatically go in reverse.
After clearing any obstruction from the track try lubricating the rollers using wd 40.
Garage door seal is loose or broken a leaky.
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.
A careless or rushed parking job can cause the car s bumper to block the sensor.
The bounce occurs at the 1 3 or 1 2 mark.
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.
Most garage doors contain a secondary safety mechanism to sense undue stress while closing.
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.
Get logic board replacement.
I was wondering if it was the new springs that is causing the bouncing.