We don't have a set price to quote you here - costs depend on whether the fix is a sensor, a gear kit, a board, or a full motor swap, and on whether we can still source a matching part for a unit this old. What we can tell you: with median household income in University Park sitting around $250,001, we see more owners here choose a full opener replacement over a patched repair once a unit hits a certain age, simply because sourcing discontinued parts for a 1987-era motor can cost close to what a new unit runs. That's a call worth making before, not after, we're standing at your garage with the cover off. Ask for a diagnosis first - we'll tell you straight whether it's a $20 sensor or a job that makes more sense as a replacement.