Chosen Solution
Recently Ive been repairing a 3DS replacing the screen when feeding cables throught the hinge the camera cable snaped. putting together the ds with out the camera pluged in, it charges but when I turn it on it flashes the 3D light green once and go’s off is this due to the camera not being pluged in?
I have exactly the same problem, but all my cables seem fine. I don’t know what to do now. Maybe it’s the new screen that doesn’t work? UPDATE: I just found my problem, speaker ribbon cable was plus upside down! It’s the cable at step 16 here. Now everything is fine.
had the same problem after sceen replacement and YES my cable was upside down !!! Thanks for the tip