So let's check for that...please do the following....
- set the log level to informational in the GUI > Controller > Logs > Logs Configuration > Wireless Controller Log Level:
- disconnect the AP from the port/power
- reconnect the AP
- check the log (GUI > logs > EWC: Events > All), is the last message that you get "Blacklist successfully sent..." like in the screenshot below.- if not please post a screenshot.
from the gui -> ap -> ap name -> radio1 tab is the 5ghz radio, and radio2 tab is the 2.4ghz radio
make sure that the admin mode is set to on, radio mode is set to something like a/n/ac and g/n, channel width 20mhz, then request a channel manually in the request new channel drop down and click save
if the ap has wlan for it ( under the wlan assignment tab ) then under the radio 1 and 2 tabs you should see the bssids listed in the bss window box
if it was external antenna I would say to check the ap properties -> professional install and make sure the right antenna is set AND that the radio1 /2 attenuation values are set to 0
also make sure in the ap->ap properties that the ap has the correct firmware version, ie the same version as the controller