This service is generally misdiagnosed by loose cables resulting from a lifespan of cables usually matches the life of the garage door. A broken cable can be caused by the cable rubbing on the track during operation or from added stress of the garage door going off track. When cables do break, a technician will measure the length of the cable to replace it with an exact match then the technician will reset the torsion system.Technicians bring all cable lengths to the job site and the service is usually completed within 1 hour. Replacing garage door cables is a very dangerous job due to the amount of torque that is, most likely, still on the torsion springs. Because of the torque on the torsion springs we do not advise any homeowners to adjust or attempt to fix a garage door cable.