So if you are pressing your wall console or remote and you hear the operator making noise but the door is not moving you just might need to replace your drive gear or screw drive coupler.
Garage door opener making noise but not moving.
You may notice physical damage to the capacitor leaking buldging etc.
If you can manually lift the door then i d start by checking the motor capacitor.
Worn gears inside the garage door opener s motor unit can make grinding or buzzing noises.
It sounds to me like the motor is not starting.
Automatic garage door opener runs but door doesn t move.
Luckily these parts can be replaced.
If it s on the way out that could explain the intermittent failure.
Replace the gear and sprocket assembly or the drive and worm gears when they re worn and making noises.
This is frustrating especially if you re trying to get your car out of the garage.
Unfortunately these parts often go out over time which may cause your garage door opener to no longer function.