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Check for a popped GFI in the garage
No power
Sounds like one of the transformer wires came loose at the controller. Easily done on that model. Take the battery back out til the screen is blank. Fiddle with the wires to see if the screen lights back up.
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