Sears opener with 3 remotes and wireless key pad all stopped working on the same day. Changed batteries in one to see if battery was problem, no change. All remotes work if standing within a foot of opener. All the wired pads work fine. Door opens and closes fine with wired pads. No flashing lights, no other problems. Checked sensors at floor adjusted and re-adjusted, no change. Would like to try easy fixes first as I'm out of work and money is tight.