I'm having a problem with my Ergodox build that I don't know what to do about.
The first column of switches on the right board (SW5:7, 4:7, 2:7, and 0:7) all activate the entire corresponding row. For example, pressing SW5:7 also activates SW5:8, 5:9, 5:10, 5:11, 5:12, and 5:13.
I can't see how this can be happening. Looking at the circuit I can't imagine any fault with my build that would have caused this.
Does anyone have any ideas for what to do to fix this? What could be the cause?
Attached are a couple of pictures of the back of the board in case I'm missing something obvious: