Garage Door Only Goes Down A Few Inches

My garage door opens about six inches and stops i press the button twice so it will stop going down and then is goes up another 6 inches or so.

Garage door only goes down a few inches. My garage door will open only a few inches and then stops. For most doors a complete rotation of the screw allows the door to advance 2 inches. You push the button to close the garage door. This just started a couple weeks ago.

The garage door can be operated manually by disconnecting the garage door opener from the door using the red pull cord. It goes partway down reverses direction and goes back up again. Clicking the remote at that point just closes it. Try to operate the garage door manually this helps you determine if the problem is related to the door or the motor.

Try to lower the door. Continue to turn the down.