This unit worked fine until about a week ago. I cannot get my nav DVD to eject and the display is totally unresonsive. When I turn it on, it says "Navigation System is Starting Up," but then it goes black (still backlit) and the display nor any of the buttons on the display will work. I can still use the iPod and XM modules with no problem, but no display. PLEASE help. i bought this unit off of eBay so there is no warranty. Thanks!