My Up Dpad isn't working

My steam deck up directional button is not given any input or not working at all. My other buttons on my steam deck does including the left, down, and right d pad inputs. I took it apart to see what was wrong with it I can't seem to brainstorm what's going on as everything looks normal inside. So what I need a new membrane Dpad or the entire left bumper board with the d-pad cable?