dropped iPhone 3GS now no power

I dropped my 2 year old iphone 3gs on the concrete from about 2-3 feet off the ground. When I picked it up the power was shut off and would not turn back on even after trying a hard reset. I was told to make sure none of the ribbon cables popped off and they have not. I also followed the fix it guide on how to remove the logic board and reinstall as this can sometimes fix the problem but no luck. itunes or a computer does not recognize the phone and unfortunatly the laptop that i did my last sync on is broken so I desperatly want to fix it to retrieve all my info. please help!!! many thanks ps i did put a volt meter on battery contacts when i had it apart and battery is fully charged, Could my logic board be put in another working iphone 3gs to retrieve info?