Cables replaced as a pair
Both cables have carried the same load for the same years. Fitting one new cable against one aged cable puts the door out of balance again.
Lift cables and rollers keep a door square in its tracks. When a cable slips off its drum or a roller seizes, the door hangs crooked and should not be operated. Ask the provider to find out why the tension was lost before fitting replacements.
Cables and rollers wear in proportion to use. In households where the garage is the main way in and out, the door can run through several thousand cycles a year, and that is common in the commuter subdivisions along the I-35 corridor north of San Marcos.

Cable and roller work always includes the parts around them. A cable that jumped a drum usually had help, and the reason has to be found or the same failure comes back.
Both cables have carried the same load for the same years. Fitting one new cable against one aged cable puts the door out of balance again.
Worn stems, cracked hinges and loose bottom brackets are all reasons a door pulls itself out of line. They are checked while the door is secured.
The tracks are checked for spread, bends and loose fixings, and the door is run through its full travel before the visit is signed off.
A loose cable is a warning, not an inconvenience. The safest thing you can do is stop using the door, because a door held by one cable can twist or drop as it moves.
If the door has already come out of its tracks, that is off-track repair. If the cable failed because a spring let go, see spring repair. Where a door has reached the stage of repeated hardware failures, our repair versus replacement guide is a useful read before the visit. Once everything is running properly again, an annual maintenance and tune-up is what keeps cables and rollers from wearing out early.
Providers may cover this in New Braunfels and the rest of the listed service area.
Treat it as unsafe. Cables are under high tension and a door left hanging on one side can move suddenly. Keep everyone clear of the opening and leave the opener switched off until it is inspected.
Sometimes, but a squeal is often the last roller to complain rather than the only worn one. Ask the provider to check the whole set and tell you which ones are actually at the end of their life.
The number of parts involved and what caused the failure. A pair of cables on a standard sectional door is a smaller job than a door that has also bent a track and damaged a bottom bracket.
Cables and standard rollers are common parts, so many of these repairs can be finished at the first visit. Timing depends on the provider, and unusual hardware may need ordering.
If the door is hanging crooked, stop using it and have a provider look first.