We work on the door, the opener, the track, the springs, and the hardware that connects them. We don't do general handyman work, we don't install the electrical circuit for a new opener if your panel needs upgrading first, and if a door's wood frame has rotted out around the track, that's a carpentry job we'll point you toward rather than patch around. On a door this age, sometimes the honest answer is that a new chain or a new drive gear buys you another decade, and sometimes the opener motor itself is cooked and replacement is cheaper than chasing parts for a thirty-year-old unit - we'll tell you which one you're looking at before we start, not after.