Do this with the door in the fully closed position.
Garage door cannot open fully.
If your garage door is not balanced right it won t go up or down all the way.
Perhaps the greatest cause of a garage door that will not open all the way up is a lack of.
If the door is very heavy then you have a spring that is broken or that has failed.
Turn the power back on and the door should open and close normally.
Why your garage door won t fully open safety first.
The door should then lower easily and you can reconnect the opener.
Before doing any sort of troubleshooting on your garage door or garage door opener make.
With the door closed and disengaged from the opener manually lift the garage door.
You should now be able to move the door up and down by hand.
As you open the door look for any signs of resistance or obstruction.
A torsion spring has.
Use a screwdriver to tighten the wire.
When the door is fully open use a mallet to lightly tap the bent side of the track back into alignment.
When your garage door won t fully open start by closing it fully and then pulling the emergency release handle down and back toward the trolley to disengage the automatic opener.
In this case call a service company to replace the spring s.
From here lift the garage door by hand about 3 feet above the ground and then release the door and see were it lands.
Test the door s balance.