I recently cut my in ground controller wire. After fixing the wire my system is fickle.
At current zones 1-3 work from the controller while the other 4 zones will not. I can adjust the valves manually and the other zones work and will come on.
So, 1-3 work and 4-7 do not? Are they in separate boxes or the same? Does the wire go from one box to the other? Could you have accidentally cut or disconnected the other ground?
If the common wire is in a wire nut going from one both to the other, I would suggest checking that connection first. If it still does not work, I would try the opposite end. If it still does not work and if you have a spare wire, I might try connecting the two above ground.
What type of splice kits did you use to make the repair. They need to be waterproof connections. Also, I would look very closely at the common wire repair as this wire travels to each valve and is most likely the issue when multiple valves are not working properly.