Ok, then there's only one possible thing left and I've seen quiet a few APs do this.
The AP reports three things: The unit itself, and the two radios.
So what you are seeing is the AP is reporting that the unit is operational, however, the slim chance of both the radios going into a state of "unsupported" is what you are seeing. It's nothing to be alarmed off. It's just a false state. You may need to go to the entire list of your APs and go to the "Interface" tab and make sure that "Admin Status" is reporting as "Enabled" and "Oper Status" is reporting as "OK". If it's reporting the "Oper Status" as "Down" or "Unsupported", then just reboot the AP.
If after a reboot (or two) later and it's reporting the same thing, RMA the darn AP.