All of a sudden both of our Remotes quit working along with the wireless remote. We have erased all codes, we have even went as far as unplugging the darn thing and we go to re-enter a pin and the wireless keyboard light flashes and with the remotes the light flashes like it is suppose to but you go to hit the remote and nothing happens at all....HELP PLEASE!! We have a craftsman 3/4 hP chain driven opener.