I've had the router for about 3 years, never had a problem things always ran smooth.  This morning after its daily reboot, the wifi on it had severe issues.  The wifi sometimes shows up as available on my phone and sometimes it does not show up in my available list of wifi's to connect to.  If I try to connect to it, it attempts to connect and stops doing so within a second.  All of the wifi devices in my home show the same issue.  LAN connection works just fine.  I've tried to mess with the wireless settings, with things like smart connect, different band widths and channels.  I've done a factory reset through the UI and that didn't work.  I'm not seeing anything in the system log indicating that its having a hard time otherwise.  I've even updated to the latest firmware just to see if it would do anything

Before I consider the wifi on the device in a physical broken state, is there anything else to try?  I feel like I've run out of options.