Car Audio Issue, can anyone help?

[Commander Quan]

I am having problems with the head unit in my truck. It is a 7 year old Panasonic CQ-DF801U with a removable faceplate. When I turn the truck on I have about 2 seconds to turn the volume up or down. After that the unit is completely unresponsive until the truck runs for 10 minutes. None of the buttons will work to do anything, after the 10 minutes it works perfectly fine. Occasionally when I flip the faceplate down and eject a CD the head unit completely resets it’s self. It starts up in demo mode and nothing work for the ten minutes and then I can use it again, however when it does this It looses all of the saved radio stations and I have to reset the clock. It just started doing this one day, it is plugged in using the factory wiring harness, and I haven’t pulled the unit out yet to check the wiring since that involves taking apart half the dash. Any ideas what this could possibly be?