As per the case description, I could understand that your RUCKUS setup is not working after a power outage.
Could you please let us know?
1. On your switch while it's plugged into the outlet, do you see any lights on? (Amber or green) Please let us know which lights are on. (Please refer to the below picture and share a picture of the same)
2. May I know how many Access Points are connected to the Switch?
Please help us with pictures of your ICX-7150-C12P Switch showing the status of the lights. And help us with the answers to the above queries.
Please let me know if you have any queries in this regard.