Some of this is reasonable to handle yourself: lubricating hinges and rollers, tightening loose bolts on the track, replacing a worn weatherstrip at the bottom of the door. None of that needs a truck to come 19 miles.
Torsion springs are not on that list. They're under enough tension to cause serious injury, and on a double door from the early '90s build era common in Chapel Hill, the springs and drums are sized for that door's weight - guessing wrong on a replacement spring is how people get hurt or end up with a door that slams. If the opener is dead and you're debating a board swap versus a full replacement, that's also worth a call, since the right answer usually comes down to whether the motor itself still has life in it, and that's not always obvious from the outside.