3dscapture.com

I've installed the capture card mod onto the original DS. However, when troubleshooting, it appears there's no STUCK points and the cable seem to be all plugged in fine. Any ideas how what this could be/how to fix it would be great!

Have you attempted to re-seat the cables?
Is there any unusual bends in the ribbons/cables?

I have unplugged everything and can't notice and weird bends. Only 1 cable that's under the capture board that I haven't checked but when I put it in, it seemed fine.

Bad connection somewhere. If you've already tried reconnecting everything, I'd go over the soldering again. Maybe remove and redo the cable installation if you're still seeing the problem.