I have 6 stations in a Rainbird system. It has been working fine till recent.
Now when station 1 starts, station 5 & 6 (i think both as i am not sure) starts and keep going till the end of the program. I dont remember if it stops on its own after the cycle as i switch it off before the entire program is done.

I a do not know if it is an issue with the controller or the valve.

Can some please shed somelight and what needs to be done..

Note: I manually tested station 1 for 1 min and 5&6 came up at the sametime and i beleive all of them stopped after 1 min.