My Garage Door Cable Snapped
Stop using the door. With one cable gone the other side is carrying double its load, and the door is one cycle away from coming off its track. Navarro Garage Door replaces garage door cables in pairs across Fremont, Newark and Union City, starting at $200. Open 24 hours, seven days a week. Call (510) 443-1883.
Right now
Do this before anyone arrives
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Stop the door
Leave it where it is and don't run the opener again.
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Unplug the opener
So nobody cycles it out of habit.
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Leave the loose cable alone
It's attached to a drum under spring tension.
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Leave the car where it is
Inside or out, a crooked door isn't worth driving under.
How to tell
Signs a cable has gone
- The door hangs crooked, one corner higher than the other
- Loose cable visibly dangling or coiled near one side of the door
- A grinding or slapping sound as the door moves
- The door jams partway with a gap on one side
- Frayed wire strands sticking out near the bottom bracket
Why
What causes it
The cables run from the bottom corners of the door up to the drums on the spring shaft, and they do the lifting as the spring unwinds. They fail from the inside out. Strands rust and part inside the winding for months, which is why a cable that looks fine can let go without warning, and why a frayed cable caught early is the cheap one. When one goes, the whole door weight shifts onto the other cable and the tracks take the twist.
Do it yourself?
Where the line is
Cable replacement means letting the spring tension off, seating new cables on both drums, and rewinding the door back into balance. That's the same stored energy as a spring job, so it lands on the same side of the line. The yearly look is worth doing yourself, though. Frayed strands near the bottom bracket are the early warning and they are easy to spot with a flashlight.
The fix
Cable replacement in Fremontfrom $200
Both cables replaced, seated on the drums and the door rebalanced.
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Questions
Snapped cable questions
Can I open the door with a snapped cable?
Not safely. With one cable gone, the other corner carries the whole door and the door twists in the tracks as it moves. Leave it where it stopped and unplug the opener. Cables are replaced as a pair, starting at $200.
Can I use my garage door with a broken cable?
No. The remaining cable is carrying the full door weight at one corner, the tracks are being twisted with every cycle, and the usual next event is the door jumping the track entirely. That turns a cable job into a track and panel job.
Why did my garage door cable snap?
Corrosion inside the strands, most of the time, helped along by age and cycles. The strands rust from the inside where you can't see it, which is why failure looks sudden. Steel rusts where it stays wet, not where it gets wet, so a door that sits closed on a damp slab overnight through the wet months gets there sooner.
Is it the cable or the spring that broke?
A broken spring leaves a visible gap in the coil on the bar above the door and the door feels dead-heavy on both sides. A failed cable leaves the door crooked, heavy on one corner, often with slack cable dangling. Either way the answer is the same: stop using it and have it looked at, because the two failures load each other.