My BLTouch isn't deploying on the EZBoard I just got. I had already swapped the wires so Blue is ground and red is 5V from when I tried the SKRMini.
The blue light isn't on when I pull the pin down. I've read this means it doesn't have a servo connection. I have it plugged into the servo header next to the X Stop.
Never mind. I think it was just not plugged in well. Started working as I was messing with it
I would recommend replacing the connectors then. Its not uncommon for the dupont style ones to wear out from being plugged/unplugged over time.