I have a Toro 240-06-04 which is almost identical to the 250. My sprinkler system on the number one valve quit working. I thought maybe it might be a solenoid, so I replaced that and it still didn't w

Get your model number than google model number. They should have a set of directions to adjust everything from nozzle to the rotation of sprinkler

Most sprinkler valves run on electricity from the timer. If the time doesn't send electricity out, the valves don't open. If an animal has chewed through a wire, that valve won't open.
You can take a meter and check the voltage on the wire at the timer. If nothing, replace timer.
If you get correct voltage at timer, measure at valve. if voltage good there, replace valve.

Follow the instructions from Toro.

When I work on a valve in the field we usually just leave the valve body in place and change out the parts from a new unit. As long as the valve body is intact as you have described this should remedy whatever problem you are having. Make certain all wire connections are good and that you are getting 24 - 28 volts to the valve selenoid when the timer has selected that station.

Okay, what is the problem?

I have found these timers to be the most difficult for a homeowner to master. I suggest going to Toro's web site and downloading the operating instructions.

There are two Toro timer manuals posted:
Copy following links, for ez word search for each manual:
http://waterheatertimer.org/pdf/Toro-53794_UserGuide.pdf
http://waterheatertimer.org/Toro-53794_UserGuide.pdf
http://www.toro.com/en-us/homeowner/do-it-yourself-irrigation/timers/Pages/default.aspx

The timer can be reset to factory defaults by 'clearing program memory' following steps in manual.
Warranty period is 1 year protection against defects in workmanship, which is standard for timers from Woods to Intermatic to GE etc.

If the display is not working, and zone does not show, then that implies internal defect, or lack of power. Resetting timer might repair problem.
The timer has electro-magnetic relays, and not an internal solenoid.
The timer turns ON or turns OFF electric power to the water valves.
Water valves have solenoids that open and close when power from timer arrives at each zone.
The solenoid can make the sound you describe, but the timer relays with make small click sound as the electromagnetic relay opens and closes.

In addition to resetting timer to factory defaults, and then reprogramming you might try changing wires to different terminals.

Also the timer works on 24Volt AC transformer that plugs into outlet. It is possible to get display errors on timers when voltage is incorrect, or outlet and transformer are not connected well. Test outlet with circuit analyzer. Change outlet because outdoor outlets get corroded. Clean blades on transformer plug.

Power surge and other events can damage timers. Nearby lightning strike. Power outage causes surge when power resumes.

There is 24-hour backup battery, but the battery does not appear to be replaceable type and instead is rechargeable or capacitor type backup. So the battery is probably not the problem

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Michael,

Two possibilities, one, the heads have valves in the bottom of them, and they are controlled my the water pressure in the tubing. You should have one valve, or possibly your meter, that turns the system on, but thats it for valves. The second possiblity, is hydraulic valves. The tubing from your controller goes to valves in your lawn that are controlled hydraulically. In both cases, as long as the tubing is pressurized, no water flows. Once your controller stops the flow of water to that particular tube, water flows.

Either way, if you have that controller, you don't have electric valves. Hope this helps.

How To Adjust Rotor Head Toro

https://media.toro.com/documents/irrigation/sprinkler-troubleshoot.pdf

Sprinkler Head doesn rotate

Try this. Should work.

www.mickman.com/irrigation/tips/toro600.html