Need help condemning breakout board
I was changing out some limit switches on my homemade CNC machine. I goofed and failed to power down the system, I clipped the two wires going to one of the switches and got a spark. I looked over at my main panel and saw that all three drivers that normally have green leds, had turned red. I powered down and restarted to see all drivers now green and everything worked. Later in the day, the limit switches (all except the estop) quit working. by "quit working", I mean that each of the three axes could bump the switches without triggering them. It no longer mattered whether they were in their normally closed position or if I manually opened them.
Each of the four systems (x, y, z, estop) has its own circuit coming from the breakout board. When I disconnect the wire controlling the estop, I get the excepted alarm. Removing any of the other wires does nothing. I went ahead and ordered a new breakout board, but I would really like to be able to use my meter to confirm the short/open. All stepper drivers work fine. Only the limit switches are inop. These are the values I have so far (see image). Can anyone tell me if these values confirm the breakout board as the culprit? Any help will be appreciated.