If your garage door is broken and simply will not open up, the chances are that either your garage door spring or cable has broken. It is likely that you may even be experiencing a combination of the two. Your garage door mechanism is made up of two cables, the support cable and the working cable, and the spring. The safety cable is a cable which runs through the centre of your spring to catch it if your working cable should break. The safety cable is in place because the spring is very heavy and can harm nearby persons or…