Nope, apparently it wasn't the WiFi card. I tried reseating it. Where exactly is the bottom LCD screen cable located?Can't find a video but you can look here, it's a step by step guide.
https://www.ifixit.com/Guide/Nintendo+3DS+Wi-Fi+Board+Replacement/5851
after step 7 just push the card back down.
As for the screen, you can try to reseat the bottom screen cable.
Sent from my SAMSUNG-SM-G850A using Tapatalk





