Chosen Solution
Hi, I am replacing a broken top LCD, and this piece fell out at some point while I was dismantling. Anyone know what it is?
I’ve looked through the teardowns and I can’t seem to find exactly where it goes. However, that white part in the center may be some sort of fibre optic, so it may be used to illuminate the power button or the power status LED. Hope this helps! Nintendo 3DS Teardown