Why do you think we use a machine to open and close them? Most garage doors can weigh between 200 and 500 pounds. When you do DIY garage door repairs, your actions could end up causing the insanely heavy door to come off the tracks and cause extreme damage to everything underneath the door itself. Think of it this way, instead of paying for a simple repair you now have to pay for car repairs, damaged items, any injuries, and a new garage door. In fact, when you do DIY garage door repairs, there are several ways you could cause the heavy door to collapse, such as by incorrectly disconnecting garage door restraints. When making repairs, garage door professionals are aware of the proper precautions to take to prevent your garage door from breaking