D-Pad and L-Stick not working, Touchscreen just barely.

So my Katsukity (capture card) N3DSXL has recently become totally unresponsive on the d-pad and l-stick when on the home menu, and my touchscreen just barely works. As soon as I touch the touchscreen, it reads input that I am holding down the bottom-right of the screen, which I'm not. Then if I hold my finger somewhere else it stops holding down the br of the screen and doesn't do anything. Then once I release my hand it has a 50/50 chance of tapping the br or just continuing to hold the br. To do anything with the touchscreen, I have to furiously mash it in one spot to select something, however that usually results in me opening the app too which isn't what I want. I'm thinking of just ripping it open and seeing if Katsukity messed something up when modding it and something just popped out.