Report "Not working My chamberlain garage door opener stop working, I press the button and it does not open or close, all it does is make this clicking noise and nothing is in the way of the sensors for the door to go up and down. I have a chamberlain lift master formula one model 2280r. It does nothing, I push the button and all it does is make a thump and then nothing. I have used this side of my garage maybe 10 times. There is also nothing blocking the sensors. one day it opened fine and would not shut again. The gears look brand new and the belt is not worn. I have not idea what to do?????"