Original post by: James Soulsby ,
It sounds like you might have an issue with the backlight if the phone is working but you just can't see anything on the screen. Try shining a torch on the screen and see if you can see a faint image. It is possible you may have damaged a component associated with this as they are around where you plug in the connectors. You can also damage components that would give no image at all. You tend to get the "boing" noise when you plug in the charger with no screen connected.