Something rings a bell here. Try this on another router before you lose all your hair.
There's more that I can't see in your post such as DISTANCE TO THE ROUTER. TVs are much shorter. Start at 20 feet for now.
Hi All - any help with my issue is much appreciated.
Cisco EA3500 - dual band
2.4gh - alphabet SSID - alphanumeric pwd
5gh - alphanumeric SSID- alphanumeric pwd
Network Mode - Mixed
Security Mode - WPA2 Personal
channel width - Auto
Channel - Auto
Samsung - UN50F6300 - Brand New
Past - all my devices worked fine with my new router.
current issue - my new TV
sees the SSID,
connects to it properly
BUT when i try to open an app it says "no network connection"
i check the network status it gives "no connection"
i try to re do the network setup - it connects again properly
BUT AGAIN when i try to open an app it says "no network connection"
this goes on and on,
the connection stays good until i exit an app if i were to do a setup from an app , once i exit the connection is lost too
i tried - updating firmware ( tv and router)
restarting / resetting etc
i see the tv as connceted on the router - also the tv shows all the IPs correctly , but still no sucessfull connection that will last.
work fine on wired connection
work fine on tethered (ATT) Wifi from my lumia 900
work fine with my old netgear b/g router
but not my $$ new cisco - could this be some firewall issue with the router ?? - all the parental controls on the router is set OFF, no MAC filtering , everything basic