Home owners say that they can hear the motor running but the opener simply will not operate the door.
Garage door opener hear motor but nothing is moving.
If the chain or belt moves then the opener motor is ok and the problem is probably at the emergency release.
If you can manually lift the door then i d start by checking the motor capacitor.
The opener may have become disconnected from the door itself a spring might be broken each of these is a possibility when you operate the opener hear the sound you expect but the door just isn t budging.
Sometimes homeowners will find that their automatic garage door opener runs but the door doesn t move.
There are a number of possible causes.
When you find that your garage door motor is making a humming noise but not opening and closing it typically means that it has gone off track or needs some sort of small adjustment.
The motor should be driving a chain or belt.
One garage door malfunction that is very frustrating is when it will not open.
They can hear the motor going but the door itself is not opening.
You can troubleshoot the problem yourself though so here s what to do if the garage door opener isn t doing its job.
Because it hums when you try to open it the battery is working properly.
Use the emergency release.
Image taken from a chamberlain manual.
Replace the main gear drive if the garage door opener makes a grinding noise but the door doesn t move your main drive gear is probably toast.
Recently the wall switch that powers opening and closing is not lit and will not activate the opener.
When the cord is pulled the motor is disengaged from the chain.
Most garage doors have an emergency release typically a red pull cord that allows the door to be opened and closed manually.
If the motor hums but the chain doesn t move that indicates a problem with the motor.
If it s on the way out that could explain the intermittent failure.
Automatic garage door opener runs but door doesn t move.
I have a 1 2 hp craftsman garage door opener that is about 20 years old.
If the motor works but the chain doesn t move the chain sprocket may need servicing.
Garage door opener won t open all the way fix.
The motor will run but will not move the chain.
This is frustrating especially if you re trying to get your car out of the garage.
The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor.
More likely you ll have to measure the capacitance to make sure it s within a good operating range.