Dead phone after screen change

Short:

phone is dead, not seen by itunes/laptop, no effect on plugging in.

Long:

I managed to smash my iphone screen. The phone was still on, but the digitiser was smashed in two spots and the screen underneath was white with a few vertical strips. Managed to turn it off (I think) by holding down the power and making a guess at swiping it off.

I've already replaced the digitzer and home button once, so was reasonably confident I could replace the lcd and screen. Got in a replacement screen assembly, popped off the off screen adn stuck in the new one. Pressed the on (hopefully) - nothing. Plugged it in to the wall - nothing (no buzz). Flicked the mute on and off - nothing. Plugged it onto laptop - nothing. Rechecked the cables to the screen and checked the USB lead and the dock connector. Cleaned them as well as I could.

I'm guessing the battery is flat and something is stopping it charging (more damage from the fall?)

Any suggestions/advice?

Cheers,

lockers

FIXED

New dock connector (and new battery whilst I had it gutted) - is busy charging now...

Phew...

Pollytintop : thanks for the help mate.

lockers