Garage Door Will Not Open | Best Pick Reports
If the opener seems to be working but the door doesn’t move, or it only moves two to three inches or fewer, the problem is likely to be a broken torsion spring. The spring is located above the garage door and assists the opener in lifting. If one of the springs is broken, the door will be almost impossible to lift. It is best to call for repair and have both springs replaced at the same time. Pairing a new strong spring with an older one will hasten the wear on the older spring and usually result in another repair a short while later.
While less likely, the problem could lie with the lock or lock bar. Sometimes, vibrations cause the locking mechanism to move to the locked position or partially extend into the track, thus keeping the door from moving. In that case, the lock bar would need adjustment.