So, my N2DSXL got some dead pixels out of nowhere.
Is this a hardware (as in screen) problem or my homebrew? If or if not how would I fix it?
Hardware problem, software never causes this
This is not a Pretendo issue, nor is it homebrew related. Measures you may take to remedy this or change it include: doing a DIY fix by getting a new panel, (get a high quality, trusted piece) or taking it to a repair shop. (If any are around.)