The Cost of This Job
We don't have a Murphy-specific price list to hand you here, and quoting one without seeing the door would be a guess dressed up as a fact. What we can tell you is what drives the number: whether it's one cable or two, whether the drum or the bottom bracket got damaged when the cable let go, and whether the door is heavy enough (insulated steel, wood-look composite) to need heavier-gauge replacement cable. A single snapped cable on a torsion system is usually the smaller job. A cable that's been frayed for weeks and has already chewed up a roller track costs more, because now you're paying for a bracket or a section of track too. Ask for the breakdown in writing before the truck leaves for the 20-mile trip from Prosper, so you know which part of the bill is the cable and which part is everything the delay caused.
One honest limit: if the cable failure has bent the bottom panel or knocked the door off its plumb line in the track, that's not a cable-repair visit anymore. We'll tell you on-site if it's turned into a panel or track job instead of pretending the original diagnosis still fits.
The DIY Question
A garage door cable is under real tension even with the door sitting still, and on a torsion system that tension is stored in the spring, not just the cable. Loosening the wrong bolt on a wound spring can put a cable, a wrench, or a hand across the garage before you've finished the sentence explaining why you thought this was fine. This is the one section where we're going to be blunt: replacing a lift cable yourself is not a Saturday project the way changing a roller can be.
What you can safely do is diagnose. Pull the release handle, disconnect the opener, and manually check whether the door moves evenly by hand with light pressure - a tilt or drag tells you which cable side is compromised without you touching the drum or the spring. Photograph the fray or the break point before you call, it helps us bring the right cable gauge on the first trip instead of a second one.
Booking a Visit
We come out to Murphy from Prosper, roughly 20 miles each way, so a call earlier in the day gives us more room to fit the visit in without you waiting past dark for a door that won't close. Have the door's brand and approximate age ready if you know it - for a 2005-era Murphy build, that's usually printed on the spring or the motor housing, and it saves us a diagnostic step.
If the door won't move at all and it's currently open, prop it and clear the opening rather than forcing the opener button repeatedly; repeated tries on a jammed cable is how a bent track happens on top of the original problem. You can see general service details on our Murphy garage door repair page, or check current cable pricing structure on the Prosper cable repair page.
