You can determine that a garage door opener needs replacement when it exhibits chronic mechanical failures, such as a motor that hums loudly without turning the drive sprocket, stripped internal gears that slip continuously, persistent electronic logic board crashes, or a complete lack of modern safety reversing sensor compatibility (such as pre-1993 models lacking photo-eyes). Upgrading also introduces modern smartphone app connectivity. Verification: Disengage the manual release and test the door by hand to ensure mechanical balance before blaming the motor.
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