My 3DS-XL was a special edition Pikachu, but after a few months, none of my games would work... My mom took it to Nintendo to get it fixed, but it couldn't be fixed. (Apparently blowing air on the cartridge doesn't work...) A few weeks afterwards, I got the black and red 3DS-XL that I have today. Works with EVERYTHING, and I made a vow to be careful with this one. (Other than that 3DS-XL, three DS Lites, two DSIs, a video game disc, (it was actually my old foster dog, Lady, that bit it, but it was my dog, so I'm basically responsible.) and possibly a DSI-XL, have broken in the care of me.)
I'd suggest giving the system to Nintendo to get it fixed. Worked for me.