Electric garage doors are a great convenience -- until, of course, they break. The bad news: a dozen things could be to blame. The good news: many are easy to fix yourself. Watch this video to learn how to repair your garage door opener.
Working with electricity is very dangerous — be extremely careful and, if you have any doubts, contact a professional.
Consult your owner's manual — older systems may not have a red release cord. They can be opened by pulling down a handle or a spring-loaded clip, or by unbolting the arm between the door and opener.