Richdel 446PR Zone 2 Not Working—Solenoid Location and Replacement

Richdel 446PR Zone 2 failed. Told solenoid likely bad. Where to find solenoid, how to replace, brand recommendations?

Finding the Valve/Solenoid

1. Valves are ON PROPERTY (not in controller)
2. Underground in valve boxes (green lids) OR above ground
3. Trace wires from controller
4. If buried/lost: rent valve locator ($150) or hire pro

Replacement

1. Shut off water
2. Unscrew solenoid from valve (2 wires — LABEL THEM!)
3. Take to irrigation supply (Home Depot/Lowes) for match (~$9)
4. Buy diaphragm kit too (backup)
5. Reinstall, test

If Valve Replacement Needed

Rain Bird DV-100F recommended.