A 1998-era opener usually means an original chain-drive unit on steel rail, built right after the 1993 federal rule requiring auto-reverse safety sensors. That's good news in one way - the safety hardware is there - but those first-generation sensor brackets are often the exact part that's corroded or knocked out of alignment after two and a half decades, and that's what throws the door into a refuse-to-close loop.
The other complication is the remote system. Openers from that build era frequently run on dip-switch code instead of rolling code, which means a replacement remote off a shelf won't necessarily pair, and a universal clicker can end up syncing to someone else's gate a few doors down. We check which system is on the unit before ordering a remote, not after.
We don't carry every circuit board for every brand on the truck - boards for openers this old sometimes have to be ordered, and we'll tell you the lead time instead of promising same-day on a part we don't have.