As long as your sensors are working properly this should have solved the problem.
How to get garage door back on track after pulling red cord.
Step 2 will allow you to freely move the garage door open and close.
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Manually move the garage door and return to down position.
Then knock the track back into position with a rubber mallet.
How to run your garage door manually when you have a power failure or garage door opener problems.
Do not pull so tight that you damage the cord or the lever.
Pull the emergency release cord toward the door.
Once the lever is in the opposite location push the button again.
Pull the outside of the track open with another pair of pliers to put the wheels back on the track.
Once you are done maneuvering your garage door and are ready to re engage the automatic door opener please return the garage door back to the down position.
Once the door is back on track knock the track back into position with a rubber mallet.