There are a number of things that can go wrong with a garage door and we won't list them all here. It's too depressing. However you can be assured that when you have a problem with your garage door all you really need to do is call us at 864-513-1436. Our phone consultations are totally free and we may just be able to point you to a DIY solution. If a service call necessary we'll be there promptly and you'll love our low prices.