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.
A worn belt or chain and cable assembly can also make noise tighten chain or belt tension to correct this problem.
Sometimes homeowners will find that their automatic garage door opener runs but the door doesn t move.
You may notice physical damage to the capacitor leaking buldging etc.
It sounds to me like the motor is not starting.
If it s on the way out that could explain the intermittent failure.
Worn gears inside the garage door opener s motor unit can make grinding or buzzing noises.
They can hear the motor going but the door itself is not opening.
Automatic garage door opener runs but door doesn t move.
Replace the gear and sprocket assembly or the drive and worm gears when they re worn and making noises.
Luckily these parts can be replaced.