Garage Door Cable Repair in San Diego

• A cable hanging loose beside the door, or coiled on the floor.
• One side of the door sits lower than the other, leaving a wedge-shaped gap at the floor.
• The cable has jumped off its drum on the shaft above the door and is wrapped beside it.
• Broken strands sticking out of the cable near the bottom bracket, where moisture collects.
• The door stops partway and will not move further in either direction.

Most cable trouble starts somewhere else. When a spring breaks, the cable loses its tension and can unspool from the drum. When the opener keeps pushing a door that has stopped on an object, one cable goes slack and slips. Worn rollers or a loose track let the door twist, which pulls one cable harder than the other. Age matters too: steel cable rusts from the bottom up, especially in garages near the ocean, and a rusted cable can part under normal load.

1. Lock the door in place and release the spring tension safely before any cable is touched.
2. Remove both cables, even if only one failed, and inspect the drums for cracks or grooves worn sharp.
3. Check the bottom brackets on each corner of the door; a bent or rusted bracket is replaced with the cable.
4. Fit new cables of matching length and thread them onto the drums in the correct grooves.
5. Rewind the springs, set equal tension on both sides so the door rises level, and test the balance.
6. Run the door through full cycles with the opener and check the auto-reverse.

A door is off track when one or more rollers have left the steel track on the side of the opening. You will usually see the door tilted, a section bowed outward, or a roller sitting outside the track channel. Common causes are a car backing into the door, a broken cable that lets one side drop, rollers worn enough to pop out, and track brackets that have worked loose from the wall.

An off-track door is unstable. It can bind halfway and then fall the rest of the way, so stop using it, unplug the opener and keep people out from under it. Do not try to hammer the rollers back in while the springs still hold tension. The repair involves taking the load off the springs, straightening or replacing bent track sections, resetting the rollers, replacing any damaged cable or hinge and then rebalancing the door.

Cables, drums and brackets are inexpensive parts, and replacing them puts a sound door back in service. A door that came off its track after a vehicle strike is different: if sections are cracked or the struts are bent, the panel replacement and repair page covers that work, and badly damaged doors may be better replaced.

• Never loosen the bolts on the bottom brackets. The cable attaches there and the bracket carries full spring tension.
• Do not try to rewind a loose cable onto the drum by hand. If the spring suddenly takes up the slack, fingers caught in the drum are crushed.
• Do not run the opener with a cable off the drum. The door lifts on one side only and can jam or fall.
• If the door is open and a cable has failed, leave it open and keep everyone clear rather than forcing it down.

Call before the next attempt to open or close the door. A cable failure usually means the spring or the track needs attention as well, which is why the spring repair page sits next to this one. Doorup answers (619) 666-6054 at any hour, so a door left open or hanging crooked can be dealt with tonight.