I have an OS3.0 (AC) controller with 3 expansion boards (41 active stations / zones). Recently one of the Stations stopped working. In checking the system, I find that this Stations (controlled from one of the expansion boards) is putting out only 3VAC. Stations on either side of this one are putting out the expected 25VAC. I switched the wiring to another Station and all is working well irrigation-wise.
Any thoughts on why one Station on the expansion board is not working properly? Any repair possible?