Well, a schoolmate dropped my DS on a carpet from belly height - broken spring in the power switch.
I got it repaired (actually replaced for a new one after a month it was in repair).
Soon after, around a month, the hinge cracked and the top screen continually lost all holding power. I had it repaired, took around 14 days. Around 20 days after that the hinge broke again, now top screen doesn't hold at all and the top screen shows only white in certain positions. :/