We had a power outage tonight and after the network came back up the wifi range decreased to about 6 ft-10ft.   At first I thought it didn't come back up correctly.   I went upstairs and directly connected to the router.   Then I realized I could connect through wifi.   So I took my phone and loaded a wifi signal tester.   As I moved away from the router it decreased.   I was able to go downstairs and maintain signal for about a minute or two but the pings increased to about 200 ms.   I assume the unit is fried?   Has anyone else experienced this issue?   What's odd is that on a wifi list on a PC downstairs I can see the 5Ghz and the 2.4Ghz popup and then suddenly disappear.    On my TV downstairs almost below it, the 5 Ghz will show up and it says the signal strength is very good but it can't connect.   I turned off everything near it including hubs that direct connect to it and there is no change in its behavior.    Any help would be appreciated even if it's to say you've seen this and you know it's fried. 

Thanks!