A straightforward opener repair - a dead logic board, a stripped drive gear, a bad capacitor on a chain-drive unit - usually runs under two hours once the truck is on site. That's the gear swap itself, the safety reversal test, and the remote reprogram.
What takes longer is diagnosis on an opener that's thirty-plus years old and has had unofficial fixes layered onto it over time - a spliced wire here, a replaced relay there. We'll open it up, test the motor draw, check the travel limits, and figure out whether it's one part or the whole unit that's tired.
Here's the honest limitation: if the opener predates circuit boards entirely, or it's a model where the manufacturer stopped making gear kits years ago, we may not be able to source the exact part. In that case the repair isn't worth doing - we'll say so and talk through a replacement instead of billing you for a patch that won't hold.