I just received another new Genie HR-44-700 today and I still have the same problem changing the channel from the remote # pad. It can take up to 4 or 5 time of entering the channel # from the key pad on the remote to get the channel to change. This is the second new box with the same problem When it is first turned on it works fine. The face plate is clean and am only 10 feet away directly in front of box. Has anyone else had this problem? Are these boxes heat sensitive?