Old 3ds xl won't turn on after reshell.

I asked my uncle to reshell it for me and we can't get it to turn back on. It shows a blue light and then shuts off with a popping noise. We already tried charging it and turning it on and, nothing. What other solutions are there?

I asked my uncle to reshell it for me and we can't get it to turn back on. It shows a blue light and then shuts off with a popping noise. We already tried charging it and turning it on and, nothing. What other solutions are there?