How Long It Takes
A straight cable replacement, one side or both, is a shorter job than most people expect once a truck is on site - the work is in the hardware, not the diagnosis. The bigger variable for Centerville is the drive: it's about 5 miles out from Hugo, so figure that into when a truck can get there rather than assuming a same-hour arrival. Once the tech is at the door, replacing both cables on a double door with original-era drums and brackets is routine work, and it's usually done in one visit unless the drums or bottom brackets are worn enough that they need replacing too - which is common on hardware that's been in place since 1993.
The DIY Question
Don't do this one yourself. A garage door cable is under load from a wound torsion or extension spring the entire time, and cutting or unhooking a cable on a loaded system is one of the more dangerous things a homeowner can attempt in their own garage - it's not like changing a bike chain. Even winding down the tension safely before you touch the cable takes the right winding bars and knowing which way the drum is wound, which isn't obvious on a door this age with worn hardware. If you're comfortable with tools, you can inspect: look at the cable where it wraps the drum and where it meets the bottom bracket for fraying, rust, or strands popping loose. That's useful information to give a tech over the phone. Touching the cable itself with tension still on the spring is where people lose fingers.
Where This Job Goes Sideways
The failure mode we see most on Centerville's stock is a homeowner who replaces the cable but not the drum or bottom bracket underneath it, because the parts look fine at a glance. New cable riding in a worn drum groove wears through faster than it should, sometimes in months instead of years, and the second failure looks identical to the first. The other spot this goes wrong is on doors where the opener has already been fighting a slipping cable for a while - the opener's motor and gears can take damage from straining against an unbalanced door, and that's a separate repair on top of the cable. If a door's original wood or hardboard panels are also failing along with the cable and drums, replacement can end up making more sense than repair, and that's a conversation worth having before parts get ordered.
