There have been various reports of No Signal or camera image in the GO App. I experienced this today with my I1 with X5 fitted. All attempts to remove and refit the camera and recycle the aircraft, RC and app failed to solve the problem. On power up the camera went through its normal dance but there was still no connection. I then removed the SD Card and this solved the problem. I fitted another card and flew 3 flights without any issues. I refitted the original problematic card but was unable to reproduce the earlier problem. Any users experiencing the No Signal message should try removing the SD Card.