Spring in a garage door is very much crucial, and it is the thing that moves it up and down. It stores the mechanical energy that controls the movement of the garage door. But broken spring is one of the most common reasons why a garage door is not opening. The tension springs may become weakened with time, resulting in the garage door not working.  https://abcgaragerepaironline.wordpress.com/2021/11/20/common-reasons-why-your-garage-door-wont-open/