Repaired my cracked screen, now iPad won't turn on

I had originally cracked my iPad Air 1 screen, bought a replacement (home button included) online and put on it. Everything was working fine at that point. However when I was sealing it up I stupidly/accidentally tore one of the digitizer ribbons.

I had a back up screen, where I would just have to transfer the home button, so I put that one on. However when I try and turn the iPad on to test it it won't turn on, just a black screen. I tried holding the power button down, tried charging it all night last night. Nothing. I ordered a new digitizer today. Could it just be something as simple as changing that?

This has been my very first time doing any type of repair like this so I was really proud of myself until that happened. Please tell me this is just a simple fix?