Chosen Solution
The screen is totaly black after changing the screen, the iphone is connecting to Itunes and still alive but no image on the screen. Tried to use another screen (a new one) but still dont work. The broken screen was image on before i changed it.
Check the LCD and Digitiser connectors on the logic board to make sure they were not damaged during the repair, if they have been you will need someone competent in micro soldering to fix the damage.
