Changed LCD/Digitizer on Nexus 6p it charges but doesn't turn on. What can be wrong?

[SefZ]

Changed LCD/Digitizer on Nexus 6p it charges but doesn't turn on. I double checked all the wires.

 

[B. Diddy]

Moved from the 2013 Nexus 7 forum to the Nexus 6P forum.

 

[GSDer]

Without knowing what's involved in changing the screen I'd hate to hazard a guess. If you could point us to the steps you followed perhaps something would come to light.