The giveaway on a torsion spring that's done, as opposed to one that's just loose or out of adjustment, is usually sudden: the door feels normal one day and then won't lift at all, or it lifts a few inches and stalls. If you hear a loud bang from the garage - not a grinding noise, a bang - that's very often the spring itself snapping, not the opener failing.
In homes built around Pittsburg's 1982 median, we see torsion springs that have simply worn out from age and cycle count, not from a defect. Steel fatigues. A spring rated for a certain number of open-close cycles doesn't know it's 1982 hardware versus newer - it just reaches its limit and goes. The moderate heat band this region sits in isn't the main driver of spring failure the way cold-climate steel brittleness can be elsewhere; here it's mostly cycle fatigue and age.
One thing we won't do: if the opener is straining, the track is visibly bent, and the spring looks original, we'll tell you plainly when spring repair alone won't fix the underlying problem and a broader door service visit makes more sense.