The garage door may have looked fine in the dark, but after the spring snaps on a cold morning, it becomes heavy, stuck

https://springhub973.lumenforgex.com/posts/how-to-handle-a-garage-door-spring-snapping-before-work-on-a-cold-day-2

The garage door may have looked fine in the dark, but after the spring snaps on a cold morning, it becomes heavy, stuck, and clearly broken.