Rachio 3 controller will not power on

Hi,
Thank you for your reply. Yes, I tested the power supply and it is good. I also left it unplugged for several hours and it still would not power up. I emailed Rachio support and Alex responded very quickly. We determined the controller failed. He sent me a replacement controller. I received it yesterday. I am very please with Rachio support and Alex was great…Thank You.