Parts We Carry
Most garages in Randolph went up in the early-to-mid 1970s, and the doors that came with those houses are single-layer steel, usually a single 9-foot or narrow double-car opening, hung on tracks sized for a lighter door than what gets built today. The cable on a door like that is a 7x19 or 7x7 galvanized aircraft cable running from the bottom bracket up to the drum on the torsion shaft - thinner stock than you'd spec for a modern insulated door, and it was never meant to last fifty winters without being touched. We carry drum-to-bracket cable in the common lengths that fit this housing stock, standard bottom brackets, and the clips and fasteners that go with them. What we don't stock on the truck is anything custom-cut for a door that's been modified or re-hung off its original track - if your door has been retrofitted oddly, that's a measure-first job, not a same-visit swap.
Why This Fails Locally
A door built around 1974 has had five decades of a cold winter climate working on its hardware. Cable doesn't fail because it's weak - it fails because the zinc coating pits over time in freeze-thaw cycles, and once a few strands go, the rest unravel fast under tension. On doors this age, the cable is also usually the original cable, never replaced, because nobody notices a cable until it's already frayed past the drum. Add in a bottom bracket that's rusted to the track after this many winters, and the cable doesn't just need replacing - it needs the bracket freed first, which is a different job than a clean swap on newer hardware.
What You Are Seeing
If the door came down uneven, dropped hard on one side, or won't move at all with a loud bang right before it stopped, that's a cable that let go - not an opener problem, even though the opener usually takes the blame first. Look at the bottom corners: one side sitting lower than the other, or a cable hanging loose and unspooled off the drum, confirms it. Don't try to force the door up by hand or run the opener again - a door standing crooked on one working cable is under spring tension on the side that's still holding, and that's the side that can let go next. Disconnect the opener, leave the door where it sits, and call.
How to Book
Call and tell us it's Randolph - the drive factors into when we can get out there, and we'd rather give you an honest slot than a guess. Describe what the door is doing: which side dropped, whether it moved at all, whether you heard a bang. If you want the general rundown on what cable repair involves before you call, that's covered on our cable repair page for Manhattan; for more on what we handle specifically out in Randolph, see the Randolph garage door repair page.
