I went on a beach trip yesterday and took my 3ds with me for the car ride. I left it in the vehicle in a safe place while we went to the beach. It did not get hot in the vehicle, and I didn't get any sand in the console. After I got home I played my 3ds some and it was perfectly fine. I flipped the lid. A while Later I went to bed and opened up my 3ds lid to find a big line running from top to bottom of the top screen with a bunch of dead black pixels around it. I used it some, and it still ran perfectly well, then powered it off, plugged it into the charger and then went to sleep. This morning when I woke up and turned it on the dead pixels around the line were mostly gone except for some around the bottom of the screen, making it much nicer to look at. The big line was still there but hard to see. It's a lot easier to see on a black background. I powered it off and took it the back cover off and everything out of it and carefully cleaned it. I didn't find any sand anywhere inside or outside. I put everything back together with no difference to the line and dead pixels. My guess is that the line is a crack in the screen, but I have no idea how it would have happened. I have not dropped it or hit it recently, but I have dropped my 3ds in the past and it was fine. I also have a screen protector on and am unable to feel any sort of crack or bump. I would like to know if I can get this repaired for cheap, or at least get rid of the dead pixels. The crack itself is not too noticeable, so as long as I get rid of the dead pixels around it I will be happy. My 3ds is running Luma 8.1, Boot9Strap, and System Version 11.5.0-38U I have not installed any new apps or homebrew apps recently. Here are some pictures I took of it. My camera is terrible, but hopefully you can kinda see what it is. The dead pixels at the bottom of the crack are just to the left of the glare. I tried to get a pic on a blakc background where the entire crack was visible, but it couldn't show up on the camera. Bad Quality Pics Let me know if there is any other information I can provide.