I don't have your phone or TV, but what about the "Lumia Beamer" app, the "Lumia Play To" app, the "PhotoBeamer" app, the "Microsoft Xim" app, the "Play to" app. These all do different things and they work in my Lumia 822, but I haven't tested them with my Panasonic Plasma TC-P50S60 smart TV yet.
Just ideas.
Best Wishes