I got a M Reg 306 from my sister and the radio (Blaupunkt 3030) is not working. She says it hasnt worked since the AA gave her a jumpstart/hotwire. Turning on ignition brings a brief flash of backlight to the LCD but then it goes blank. I have the code and the manual, and Ive tried entering it 'blind' The red code LCD blinks regardless. Anybody have any ideas as to whether its likely to be the head unit or the wiring leading to it that is burnt out? Any help appreciated, Jake Lewis