In a 1973 house, the symptom is usually noise before it's failure - a grinding or a shudder partway through the cycle, which is the roller bearings or the spring itself losing tension unevenly. On original or near-original hardware, that noise tends to show up on the way down, not the way up, because a weakening torsion spring lets the door drop faster than the opener expects.
The area's moderate heat band doesn't put the same stress on doors that hail or heavy freeze-thaw regions get, but it does mean lubricant breaks down and dries out on a predictable schedule, which is exactly the kind of thing a maintenance visit catches before it becomes a stuck door on a Tuesday morning.