I dont want you to think that I am insulting your intelligence but this. Check that your connection to the smart fly system is correct. I have the same system but I am using a 9CH. I also know that if the reciever or transmitter is off the unit will not turn on. Its a safety feature that you probably already know about. That might give you a clue that you may have a incorrect connection somewhere or you just did not turn on your reciever. Also, check to make sure that the system is plugged into the smart fly unit correctly. Maybe you did a simple overlook.