After entering new information such as transponder info for a manual scan or a channel save, when I save the info either by the red key (save all) or the OK button the receiver shows the saving message briefly then the screen blacks out, the video reappears with the saving message again briefly and the screen blacks out again then the video reappears for the last time with the info saved. This only happens with the my Vantage and I didn't know if this was normal or if I'm at the beginnings of a system crash?