Rain-bird Sprinkler Won't Turn OFF?

Just had backflow tested and tried to turn on sprinklers for the first time this spring using the test feature. All zones turned on at once and won't turn off unless I shut down the water supply despite the controller being in the off position. I've tried reseting the controler, changing the battery and unpluging. Nothing seems to work. Not too handy, so unless its an easy fix I'm probably stuck calling an irrigation repair person.