The first sign is usually a door sitting crooked. One bottom corner hangs an inch or two below the other, or a wedge of daylight opens down one side when it is shut. Sometimes a loose loop of steel is visible up where the cable should be wrapped tight. Nothing stops working, which is precisely why it becomes a bigger job than it needs to be: the weight that side stopped taking is now being carried by everything opposite it.
Tracing the run matters more than replacing the strand. A pro follows the cable from drum to bottom bracket on both sides, because one rarely parts without something having pushed it first: a drum grooved out by years of the same wrap, or a bottom fixture corroded where it meets a slab that takes splash-back off the driveway. Cables are renewed in pairs, and the door is clamped before the drums are touched, since the spring above the opening is holding the weight either way. On the detached garages common in the older parts of town, the frame gets a look as well.
Whether you're in Ladd Park, Berry Farms, Sullivan Farms, or elsewhere around Franklin, garage door cable repair is arranged around the conditions on the ground in and around Franklin, so the plan fits the building rather than a template.
Houses and businesses both get this treatment, but the scheduling differs. Compare residential garage door repair with commercial garage door repair and pick whichever fits the property.