Chosen Solution

I own a New Nintendo 3DS, never dropped it, never got it wet, always kept it in its case but I just stopped using it for a while. I decided to use it again and found that even if I move the slider, the volume stays super low. I’ve taken it apart properly to check if it was a slider issue but it isn’t. Is there anyway to fix it or is there a piece I can buy to fix it?

@rsharky check the speaker ribbon cables and connector. You could try to connect a new speaker assembly (or for now just another speaker rigged to it) and see if that makes a difference. Also, check the audio jack and see if that works better/at all. If none of that works there is always a possibility that this is caused by a bad audio IC. Let us know what you find out with a new speaker first. https://www.ifixit.com/Store/Game-Consol