2008 Elantra Stereo problem
 

Hello All,
I have a 2008 Elantra, and the heat of the past summer, the stereo began infrequently displaying the message: "FM1 (or FM2 or AM) Loading", Now it displays this message all the time.
No problems with the AM/FM radio, but I cannot use the CD player or mp3 input.
Any suggestions to clear this up, or is it time for a new stereo?
Regards,
Rand