family guy

Hello to all newbie question im afraid.. last week my stereo (5000 series 02 galaxy Tdi) died i went to turn it on and nothing happened the screen was just blank tried everything obvious within my limited knowledge such a fuses ect but to no avail asked a mechanic friend and he suggested try to re-input the code but its not asking for a code its just totally died any ideas would be gratfully recieved thanks in advance. family guy.