I purchased a Smart TV model KDL-40W705C in October 2015 to upgrade from my KDL-32W5500.  I wanted obviously full HD and streaming apps.   Two weeks ago the picture started freezing on either Netflix, Amazon Prime, BBC iplayer or Demand5 and it has now become a regular problem. Thinking it was a broadband issue I would check using a speedtest on my PC  and invariably it would be 60Mbs.  So I knew that this was not the problem. Each time I have returned to the home screen only to see virtually all the apps gone.  I then go to settings/network and go to refresh internet content and it states there is no internet.  Is this a fault of the set which needs addressing or a server issue.  I am in England.