Aporte original por: Ben ,
Did you unplug the battery before unplugging and plugging in screen cables? If not: 1. Unplug the battery 2. Unplug screen cables 3. Plug back in screen cables 4. Plug back in battery 5. Plug back in home button cable 6. Turn phone on again. If still same issue, screen needs to be replaced as the screen has gotten damaged. You are seeing backlight but no display which usually is a bad screen.