Avoid the mistake of trying to repair a torsion spring on your own. What is a torsion spring anyway? When you are standing inside the garage when the door is down, look up above the door. You will see a long coiled spring. That is the torsion spring. It might look innocent, but it has a great deal of power stored in those coils. If you handle that spring wrong, it can snap in the wrong direction. This particular repair is one of the Havertown garage door and opener repairs you need to leave to the professionals. It might look like it's easy. Nevertheless, why take a chance?
Do not make the mistake of thinking you can repair a door off the tracks. You might think it looks easy. However, in order to repair the door, you need to know how to dismantle it first. Then you need to fix the underlying problem that caused the door to come off the tracks in the first place. At that point, you can install the door back into the tracks. You cannot do this repair yourself. It is definitely a two person job. Moreover, it can take a bit of time. Therefore, do you want to spend your weekend fiddling with the door or do you want to bring in the experts who know how to handle Havertown garage door and opener repair.
Avoid the mistake of disabling your safety sensors. Some people think that the safety sensors are a nuisance. They jerry rig the sensors so they no longer work. However, that is not the way to handle a Havertown garage door and opener repair. Those sensors are there for the protection of everyone in your family. If a child or pet is under the door when it comes down, they can receive massive internal injuries. The door is very heavy and the tension in the torsion spring puts pressure down to keep the bottom sealed. Bring in professionals to handle any sensor related issues.
Do not make the mistake of trying a replacement on your own. You might think everything is already there. You have done simple Havertown garage door and opener repair work in the past. How hard can a replacement be? Do you know how to handle a torsion spring safely? Do you know how to engage and disengage an extension spring? Do you know how to dismantle the old door and put the new one in? Do you have an entire weekend to deal with the situation? Put your new garage doors in Havertown in professional hands.