i am having same issue. It was fine and when i shut engine down and tried to put PIN code to protect it i could not confirm last number. I turned off unit and after that i could not get it on. No lights no sound from radio. Nav unit in back is making sound but screen is dead just like lights on it and no function at all. Also few days before that hapened i noticed that BC button on turn signal handle stoped responding too. Any ideas. Oh one more thing....turn signals sometimes dont work too, not ewen when i press all 4 turn signals buton!?!? Now they work but screen is dead. ....any ideas before i start taking it apart? i already checked all fuses in back and front.

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