Console not turning on

My 3DS XL is not turning on after I dropped it a few weeks ago (the top screen wasn’t working at first, but now the whole console is not turning on. It makes a clicking noise before shutting down every time I try to power it). I opened it up and tried disconnecting and connecting the WiFi chip, also disconnected and re connected the entire motherboard, but it’s still not working. While connecting them, I noticed one of the top screen ribbon cables has a small cut through it. It’s still connected, but the cut is obvious. It had it since I re-shelled it a few months ago, though, and the console didn’t have any problems.

Should I replace the ribbon cable, or is there something else I need to do? If it’s the first, what ribbon cables would I need? It’s the cable underneath the thinner one.