Long story short. My garage door opener crapped out. I got a nice one out of a garage that was getting torn down. I hung the thing, hooked everything up, and it works perfectly, except that it WON'T GO DOWN UNLESS YOU HOLD THE WALL BUTTON UNTIL THE DOOR IS COMPLETELY SHUT. If you try and use the remote to close the door, something inside the unit clicks. I popped the cover off and it appears to be a little black module on the circuit board that is clicking. One last thing. The door came with the "electronic eye" sensors, which I never hooked up. Does the door need the sensors to close with a touch of the button or the remote?