I have an open Sprinkler version 2.1, Station 5 is dead. As far as i know it has never worked. According the the display it is on but it does not send current out to the connector. All of the other stations work just fine.
Any suggestions? I thinking the transistor could be bad.
Is yours a DIY kit? If so, you can replace station 5 triac: the part number is MAC97, which you can easily find on digikey or mouser. You can also send an email to @rayshobby.net">firstname.lastname@example.org and we can send you a couple.
To replace the triac, my suggestion is: so long as you can access the legs of the existing triac, you should use a diagonal cutter to carefully clip off the existing one, then desolder the residue legs, and solder the new one. If this is not possible, use a desolder pump.