I have installed a Avic D1 and its been working fine for 2 Months. Everything was working fine on my way to work. When I turned my car back on after work the nav powered up cause I can hear the fans running and the unit charges the ipod but the screen is blank and none of the buttons or motorized screen doesn't work. Any idea's of what might have happened?

I would check all the connections in the back of the unit and make sure they are tight in place.