Circuit boards are the number one failure point on openers from this era. Capacitors and relays age out around the 15-20 year mark regardless of how well the door was maintained, and once that board starts failing you get the symptoms owners describe as random: lights flashing, the door stopping halfway, a remote that needs three presses.
Safety sensors are the second common issue. They sit low on the track, a few inches off the floor, and anything that knocks them out of alignment - a bike, a stored ladder, just settling over the years - will stop the door from closing at all. It looks like a bigger problem than it usually is.
The area sits in a cold-moderate climate band, and cold matters for openers more than people expect. Grease in the drive gear and on the rail thickens in low temperatures, which makes the motor work harder and can trip a thermal overload or burn out a capacitor faster than it would in a mild climate. If your opener struggles more in January than July, that's not your imagination - it's the cold doing exactly what it does to this hardware.