Soldering the wires are done and i already check for any short circuit and there's no shorted from my solders. after i checked the soldered wires i put all the necessary ribons to it's places and screwed back the cover. after that i check the 2ds for power and there's the light for the power. so i turn it off. and when i proceed to install the sd card to the card reader and to the computer there's no power or any output from the 2ds. what is my problem?