Answer to: Nintendo 3DS Charge but won't turn on.Hi these units get dropped from time to time, remove the back plate the battery and then the back casing. Look up towards the left trigger there is a small ribbon cable that can come loose if dropped. Lift up the small tab (carefully) remove and replace ribbon cable. Also there is a small square adapter in the center of the unit directly below the cartridge slot this is your wifi card once again gently pry up on it and it will come loose then reattach it. If these things don't work you more then likely have a tear in the ribbon cable that connects the screen to the motherboard. I have also on occasion seen this happen on a console that some one tried to hack and failed resulting in a hard brick of the motherboard, if that's the case you can try to find another mother board or sell it for parts.