A single snapped cable on a torsion-spring door, caught before the drum or track takes damage, is a contained job - unwind the spring safely, pull the old cable off the drum, run the new one, reset tension, test the balance. Two cables at once, or a cable that jumped the drum and kinked the track on the way, takes longer because we're straightening or replacing track as well as swapping cable.
We travel to Princeton from Allen, about 11 miles out, so we don't promise a same-hour arrival the way a shop with a local depot might. What we do promise is that once the truck is on-site, the repair itself doesn't take longer just because it's Princeton - the doors here are newer and the hardware is generally cleaner to work on than older stock elsewhere in the area, which keeps the job itself on the shorter end.