iPod after glass replacement not working at all

I just replaced my iPod touch glass with a new one, and my ipod won't turn on at all. The power button doesn't do anything, I tryed to plug it in to a plug socket or to my mac, but it won't turn on. No reaction. Nothing. Any ideas??

Inside it's looking pretty good, I didn't hurt anything or demaged the little connecion fom the logic board to the power/loud/silent buttons. Seriously, I have no clue what's wrong with it.