I have been through so many 3DS XLs from returning them to Walmart and from Nintendo repair. This is mainly do to dust under the screen. There's normally some trapped there right out of the box, and more gets in after a while. It's not just me, either. Search Google...so many people have this issue. Everyone suggests sending it to Nintendo to have it "repaired". Most of them get it back with dust in another place. All these people, myself included, seem to take very good care of the console. I absolutely love the system and it's software, but this is getting ridiculous. No one should have to go through the trouble of returns as well as "repairs" from Nintendo to get a flawless system that costs $200. There was one guy who sent his in seven times.
Call me OCD, but when I buy a console for this price, I expect it to be perfect. Nintendo, get your repair people to actually repair systems, or even better, make a system that isn't prone to extremely loose hinges, creaky back plates, and a screen prone to getting dust stuck underneath.
Flame me, or share your frustration.
Rant ended.