The garage door opener is the motorized system responsible for opening and closing your garage door safely. It includes components like the motor, drive mechanism (chain, belt, or screw), gears, limit switches, sensors, remote controls, and circuit boards. Common issues include motor burnout, worn gears or belts, misaligned safety sensors, dead remotes, faulty limit settings, and power problems such as tripped breakers or unplugged units. Symptoms may vary from a non-responsive opener to loud grinding noises or the door reversing prematurely. Because the opener interfaces with numerous mechanical and electrical parts, a properly calibrated system is essential for operational efficiency and safety. DIY fixes like changing remote batteries or resetting connections may help, but more complex repairs often require a trained technician to diagnose circuit failures, reprogram settings, replace worn parts, or rebuild the opener unit to avoid malfunctions and preserve home security.