The complication we run into most in Flatwoods is mismatch: a door that's been replaced at some point but an opener that hasn't, or the reverse. Houses from 1973 have had forty-plus years to accumulate partial upgrades, and an opener sized for a lighter original door can struggle - or fail early - once it's pulling a heavier insulated replacement panel.
The other complication is cold. Severe winters here slow lubricant and stress plastic housings and gear teeth that were already near the end of their service life. An opener that's marginal in October can fail outright in January, and by the time it does, more than one part inside has usually gone.
Our honest limitation: if an opener is old enough that the manufacturer no longer makes parts for that logic board or drive assembly, repair isn't always the right call. We'll tell you when replacement is the cheaper, more reliable path rather than sink a repair bill into a unit that's going to fail again in a year. That's a call we make on-site, not over the phone.