Front Facing Camera stopped Working after Logic Board Replacement

Hello there, I replaced my sons logic board with that of another IPod Touch which was fully functional. Once I did the swap, for whatever reason the Front Facing Camera ceased working. I have checked all of the connections over and over again. Nothing has been bent or split There's nothing to disconnect from that camera as it's actually attached to the logic board. I have reset all settings on the Ipod and still nothing. I was super gentle with the IPod disassembly. Any ideas?