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Garage Door Cable Snapped or Loose
in Carrollton, TX
The cables on a garage door keep it balanced as it moves. One cable runs on each side of the door. If one snaps or slips off the drum, the door tilts and can fall or jam in the track. Fraying cables are common on Carrollton homes built before 2000, where the original cables have been running for 20 or more years without replacement.
Quick Answer
Garage door cables are steel wires that work with the springs to lift and lower the door evenly. When a cable snaps or unwinds, the door drops on one side and becomes unsafe immediately. Carrollton humidity and heat accelerate cable fraying, especially on doors over 10 years old. Call for service right away and do not try to use the door.
Telltale Signs
Warning Signs to Watch For
- One side of the door hangs noticeably lower than the other
- You can see a steel wire hanging loose near the bottom corner of the door
- The door fell or dropped suddenly on one side
- The door is stuck at an angle and will not move
- Frayed or kinked wire visible near the cable drum above the door
- The cable drum above the door looks tilted or has wire coiled unevenly
Root Causes
What Causes Garage Door Cable Snapped or Loose?
Spring Failure Pulling Cable Off
When a torsion spring breaks, the sudden release of tension often yanks the cable off the drum or snaps it. The two systems are connected, and a spring failure almost always affects the cables at the same time. This is why a broken spring should never be operated through.
The Fix
Cable and Spring Replacement
Both the broken spring and the affected cable are replaced together. Replacing only one without checking the other leaves you with a door that will fail again shortly.
Cable Fraying from Age
Steel cables are made of many small wires twisted together. In Carrollton, humidity in spring and summer combined with heat causes the outer wires to rust and fray over time. Homes built before 2000 in neighborhoods like Countryside often still have original cables that show visible rust and fraying if you look closely.
The Fix
Cable Replacement
Frayed cables are replaced before they snap fully. A technician replaces both cables at the same time, since if one is worn, the other is at a similar point in its life.
Cable Drum Misalignment
The cable wraps around a drum at the top of each side of the door. If a drum works loose or gets knocked out of position, the cable winds unevenly and eventually slips off entirely. This happens gradually and often shows up as the door getting slightly crooked over several weeks before the cable fully fails.
The Fix
Drum Realignment and Cable Reset
The drum is repositioned on the torsion bar and locked down. The cable is rewound correctly and checked for even tension on both sides before the door is tested.
Self-Diagnosis
Which Cause Applies to You?
Check the signs you're observing to narrow down the likely root cause before your inspection.
| What You're Seeing | Spring Failure Pulling Cable Off | Cable Fraying from Age | Cable Drum Misalignment |
|---|---|---|---|
| Loud bang followed by door dropping on one side | |||
| Rust or fraying visible on the cable wire | |||
| Door has been getting slightly crooked for weeks | |||
| Cable is lying on the garage floor | |||
| Cable is still attached but coiled unevenly on the drum | |||
| Spring visibly broken at the same time |
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