Why Did My Garage Remotes Stop Working?

Can someone help me figure out how to get my garage remotes working again? The problem is not with the remotes. Here are all the facts: 1) both remotes and the keypad stopped working at the same time. 2) I put new batteries in the remotes just to check to see if that could be the problem, but they still did not work. 3) I tried reprogramming the remotes and resetting everything, (pushing the green button on the opener, etc) but they still don't work. They don't reprogram like they use to. 4) the garage door still works fine when Ipush the main button on the wall. 5) nothing is blocking the eye sensors in the door area. 6) the antenna has a meter charge; and the remotes still don't work when placed right near the antenna. 7) It's a craftsman garage opener and the part # on the back for the panel is 41a315-7d. Does anyone have any suggestions for me? Should I try to fix something on the logic board? Should I buy a new logic board? Or is there something else I'm missing here?