My craftsman 1/2 hp model # 139.53975srt1 (part # 41a5021-2f) amber piolet light at the motor housing continues to flash 5 times. The opener does not respond to the remote or the hard wired controller. The door opener safety eyes at the floor seam to be functioning, when the eye is blocked the green light goes out. I just replaced the rpm sensor in the motor housing unit with no luck. What is the code for 5 flashes and what do I look for now?