If your door won't open at all and you hear a loud bang from the garage beforehand, that's almost always a torsion spring letting go - common enough on doors from the 1990s build era once the spring hits the end of its cycle count. If the door opens partway and reverses, or the opener runs but the door doesn't move, that points to a cable or a slipped drum rather than the spring. A door that opens fine but won't close, or reverses right at the floor, is usually a sensor alignment issue, not a mechanical failure, and it's often the fastest fix of the three. None of these are safe to force by hand - a door under spring tension that's partially failed can drop without warning. If you're not sure which of these you've got, don't keep testing the opener button; call and describe the sound and the behavior, and we can usually tell you what we're bringing before we leave Anna.