My modded N3DSXL bumped against something, and I think it caused the top screen to flicker slightly. I tried to fix it by just following simple steps involving the battery. But I eventually just opened it up, and disconnected the cables and then put them back in again. I figured it would've worked, but now it wont turn on, just a small blue light before turning off. I made sure to take out the battery and microSD before doing all of this, but I did accidentally turn it on for a second before putting in the microSD, which made me see it wont turn on. What do I do? I looked at only the back/bottom side of the 3ds. I didn't open the top screen at all. The cables don't seem to have any serious damage at all, not even a little cut or anything, but I don't know any better. I feel like I didn't mess up plugging the ribbons back in, but I'll keep trying if that's all I need.