PC-506 CONTROLLER
i have a rain bird pc-506. it is an older controller and worker great. I recently turned the water off for the rain. When i turned it back on the lcd screen was blank. I replaced the 9 volt battery. the lcd screen now says.
PO OFF. i assume this means power off. I switched plugs, but the unit continues to say PO OFF. any help or suggestions would be greatly appreciated. thank you