I think the main garage door opener, the one that gets used the most, is just dying. Could be jammed or something because the motor sounds like it’s stalling out. I disconnected the trolley/carriage from the door and tried running it by itself along the track; the motor groans and it only moves the trolley an inch or less before quitting in ignoble defeat. The openers were installed 29-30 years ago.
Anyway, just like Ezcome this is were my “cheap bastard” kicks in.

I think most people have this side, a Mr. Cheap Bastard to their Dr. Jekyll. The rational person would probably conclude that both units need to be replaced right then and there but I want the cheapest possible remedy.