I bought a UE75MU7000 from John Lewis, UK in April 2018. This was exported to my home country Sri Lanka directly. I have been using the TV for the last two years without problems but today I noticed a dark strip on the screen that goes from top to bottom. See photos.  I would like to understand my options to get this fixed. I am very disappointed that this is the second Samsung TV that gave me this issue. This is a 75 inch expensive TV and wanted to use it for long time.  ... View more