I have just bought an Omega 2.5 elite. I am having a problem with the CD changer. At sometime the battery has been disconnected and the radio has had the code entered and is working corrrectly, however although I have the code for the CD changer I cannot get it to enter. I have followed the instructions in the manual but am not getting the "enter code" message on screen.Anybody got an idea how to get this working. Many thanks