Some opener fixes are within reach for a homeowner with basic tools: reprogramming a remote, replacing a battery in a keypad, or cleaning and lubricating the track the chain rides on. Swapping a drive gear or a logic board is not - those repairs involve disconnecting the unit from a spring-loaded system, and getting the tension wrong on reinstall can drop a door on someone. If your opener is making a grinding noise but the door doesn't move, that's very likely a stripped gear, and it's a part-and-labor job, not a DIY one. Given Auburndale's income level, a $150-200 gear replacement is worth doing rather than replacing a $400+ opener outright, provided the motor and logic board are still sound - worth a real diagnosis before deciding.