The most common emergency call from this kind of housing stock is a snapped torsion spring, usually on a single-car door that's never been upgraded to a heavier-duty spring despite decades of openers getting swapped on top of it. Second most common is a cable that's frayed off its drum, often from a roller that seized in the cold and forced the cable to carry load it wasn't built for. We also see broken opener drive gears on units installed as a later retrofit, since many of these garages weren't wired for an opener when they were built and the add-on wiring and bracket work wasn't always done to match the original frame. None of this is dramatic, but any one of them can leave a door stuck open in freezing weather, which is its own problem.