The Hub is not a separate item so doesn't have lights, it is one of the programmes, you click on Hub on the remote and get a selection of other programmes such as Channels- Movies- Search etc and including Browser, which used to bring up the internet but doesn't now, I have checked the Menu and network settings and it says 'Connected to internet' so I am at a complete loss.
I don't wish to be disrespectful but it would appear that you have never seen a Samsung Smart TV, I attach three photos, two of the screen and one of the remote. I switch on the TV, which works fine, I then click on to the Hub which brings up the screen as shown, I then click on the Web Browser which used to connect to the internet but now just shows a small revolving circle and nothing else.
Sorry, cannot find any way to make an attachment, maybe you can gather the problem from the description---or tell me how to make an attachment!!!!
If you post a photo on Wikisend.com, copy the URL of the posting to your Reply, I will be able to see the photo that way.(Wikisend.com is easy to use, requires no registration and no fee whatever, and lacks all drawbacks as far as I can tell.)Do other apps work, at present? e.g. Facebook app, or other apps that have internet functions ?
One thing deserves checking: whether the router box or WiFi router, that your TV gets internet through, is in a good status. Try unplugging the router box, then leaving it unplugged + minutes, then plugging it in again, and waiting + minutes or until its lights stabilize, then try connecting the TV to internet or using other apps. That might perhaps be just what is needed in this case.
I hope that I have done it correctly and you receive the photos but I am 88 years old and not too good on the computer.The Router is fine, I am running a Tablet and Mobile phone off it quite well and all other Apps work and as I said previously the network settings clearly show that the TV is connected to the internet.
The URL is,http://wikisend.com/download/631884/CCF11012015.pdf)CCF11012015.pdf(URL)
It is a bit complicated, here in Spain we do not get English programmes normally they have to come by internet so I have a Linux box which has an ethernet cable direct from the router and then an HTMI cable to the TV and it works fine, I get all the channels that I want so it is working okey, I want the Browser on the TV else, it does many things, my Tablet and phone work on Wi-Fi and another Linux box in the bedroom works on a TP-Link, and so does my Humax box. Everything is okey except this stupid browser, that was working ok up to about a week ago. I have tried everything I can think of but to no avail.