Having an issue with our Sony Bravia KDL-60W605B. the screen has started displaying small, but very noticable horizontal lines across the whole screen.

Cables/devices etc have all been checked and the Tv has been factory reset, but the lines still remain.

I have contacted Sony direct but so far no response. The Tv is 20 months old so the 1yr warranty has now expired.

Does anyone know what the nexts steps to take are ?