Controls give useful clues.
Different responses can help narrow down the assessment, but they don't establish a diagnosis on their own. Keep the opener's make and model available if you can read it without climbing or approaching moving parts.
A stuck door is a reason to stop.
Keep people and vehicles away from a crooked, stuck or damaged door. Do not adjust springs or cables or release a door whose condition is uncertain. Let the technician assess the system.
Agree on the intended result.
Ask what the repair should restore and which existing controls are included in the checks. A new remote, repaired opener and repaired door are related but distinct pieces of work.
A lock or key instead?
Home, car and business locksmith information for Avondale has its own page.