Have a DVD Navigation in my 2003 Toyota and some of its buttons stopped responding after I had removed it to clean up the air ducts. I had not disconnected any of its wirings, they were always connected. The system always stayed powered on and sometimes the navigation worked but some of the side buttons would not respond, the CD changer would switch on sometimes. The same buttons which did not respond also control some of the radio functions. This is a Delco unit manufactured by GM and came factory fitted.
Frustrated, I removed it again to see if there is a reset switch, did not disconnect any wires, found no reset switch but fortunately I was able to power it down but now it will not power on though the clock display works.
So now its not working at all, just displays the clock
Please help just frustrated with this?