Garage door openers are electromechanical, so when something goes wrong it’s usually the motor, the drive mechanism (chain, belt, or screw), the logic board, or the remote/keypad system.
Common symptoms and likely causes
Opener runs but door doesn’t move. Often a broken drive chain or belt, or a stripped gear inside the motor housing.
Door reverses immediately after closing. Usually a safety sensor issue or the down-force limit needs adjusting - openers are designed to reverse if they sense resistance.
Remote works intermittently. Weak batteries, interference, or a remote that’s lost its programming to the opener’s logic board.
Opener is unusually loud or grinding. Worn gears or a chain/belt that needs lubrication or replacement - catching this early avoids a full motor failure.
Repair vs. replace
If your opener is under 10 years old and the issue is mechanical (chain, belt, sensors, remote), repair is almost always cheaper and faster. If the motor or logic board has failed on an older unit, replacement can be more cost-effective long-term, since newer openers include better safety features and Wi-Fi connectivity.
A local technician can typically diagnose opener issues in a single visit and often carries common parts on the truck for same-day repair.