The Nintendo 2DS is a handheld gaming device developed as an entry level version of the Nintendo 3DS with nearly identical hardware, but without the 3D upper screen function.
So i think my 2ds sleep slider is broken (it randomly goes into sleep mode).I have another 2ds with a broken card reader, can i change the sliders between them?
Yes, you can change parts between the two items. I would recommend disconnecting the battery on both units before performing this procedure(you can put them back in once the procedure is done).