Parts wear, doors last
Springs, cables, rollers and openers are replaceable parts. DASMA TDS-190 notes spring life may not match door life.
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Most single failures, like a spring, a cable or an opener, are repairs. Rust through, rot or several damaged sections usually point to a new door. Answer five questions for a leaning, the reasons and what to ask for in writing.

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General guidance, not an inspection. It never shows prices, because only a look at your door can set one.
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General guidance, not a quote or an inspection. No prices are shown because only a look at your door can set one.
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Springs, cables, rollers and openers are replaceable parts. DASMA TDS-190 notes spring life may not match door life.
Rust through steel and rot in wood rarely stay patched.
The federal standard covers openers made on or after January 1, 1993. The CPSC says openers without automatic reversal should be replaced.
If you want an insulated door, compare by whole-door U-factor, per DASMA TDS-163.
Sources
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Spring, cable and bracket components are under extreme tension and are for trained door systems technicians.
AccessedSpring cycle life may not match door cycle life.
AccessedU-factor and R-value are not reciprocals for garage doors; ANSI/DASMA 105 is the whole-door test standard.
AccessedApplies to residential openers made on or after January 1, 1993; a closing door must start reversing within 2 seconds of contact, and photo eyes are an allowed secondary device.
AccessedSays openers without automatic reversal systems should be replaced immediately.
AccessedShort answers
Short answers.
It varies with use, material and care, so we do not state a number. Parts like springs wear out on their own schedule. A sound door with a broken part is usually a repair.
Often, if the model is still made. See panel replacement for what to send.
Because we have no verified local prices to show you. Send the details and get a written price for your door.
Send the details
Ask for a written price for the repair, and for a new door if it is worth comparing.
If anyone is trapped or hurt, call 911 first. Do not try to free a door by loosening springs or cables.