I have a audiovox xpress radio. after i turn it on every thing is okay. when it is on for a while the screen then starts to break up and the title of the songs do not change when the song does. then when i turn it off and then turn it right back on the screen will go to a purpleish color and there is no text on the screen at all. i have only had this radio for 8 months. can you please help

Audio Players & Recorders - Audiovox - Xpress R XM Satellite Radio Receiver with Vehicle Kit