The single biggest call we get is a broken torsion or extension spring on a door that's been working fine until the second it isn't - usually on a door original to a house built in the late 1960s or 1970s, since that's the bulk of what's standing in this area. Second most common is an opener that's quit communicating with its remote or wall button, which on older installs often means the whole unit is near the end of its working life rather than a quick fix.
We also get called for off-track doors - a roller or cable gives out and the door binds or comes partway off the rail - and for doors that have gone noisy and rough after years without lubrication or adjustment. The region's climate is mild with occasional freezes, not the kind of extreme cold that cracks steel, but humidity and age still take a toll on rollers, hinges, and cable ends over time.
One honest limitation: we don't stock every obsolete opener board or specialty panel for a door this old sight-unseen. If your door needs a part that's no longer made, we'll source what we can, but there are jobs where replacing the unit makes more sense than hunting down a discontinued part.