Could also try disconnecting the door from the chain should be a pull cord that allows this.
Nothing blocking garage door still wont close.
Clutter or obstructions that block the sensor are the first problems to look for if your door won t close or in extreme cases open at all.
If there s something blocking the door from closing all the way a full close will be impossible.
Depending on the brand.
Now if there is nothing physically blocking the door and sensors you can check the safety.
If your garage door won t close all the way the problem could be due to a blocked photo eye.
Try the wall.
Then try closing the door manually.
The majority of garage doors manufactured since the early 1990s are equipped with this safety feature.
Something blocking the door.
The sensors may not be aligned properly.
What to do when your garage door won t close 1.
First check the sensor lights.
The first step to take when your garage door won t close is to look around and do a visual check.
It could be that they are just barely aligned but the vibration from closing causes them to intermittently break the beam.
Though this problem should be obvious it shouldn t be overlooked.
If something is blocking the safety beam then the garage door will not close.
Now if your garage door still won t go down after you ve made sure the sensors are properly aligned and there s no obstructions you ll want to take a damp cloth and wipe down the lenses of the sensors.