My Samsung Frame TV 65" model QE65LS03DAUXXU, suddenly developed this fault which is most visible when the screen is white but always visible even when different colours and brightness levels are displayed. There is also a corresponding slightly dark area running top to bottom too but that is a little harder to see.
The tv is wall mounted where it is above a foot deep unit, so it would not be easily knocked in its current position, the screen exterior is unmarked and the bezel is undamaged, this appears to be inside the screen but behind the coloured pixel layer, if that is possible.
I'm in the U.K. and the screen was purchased for £1350 around 18 months ago, I called Samsung who ran video diagnostics where they confirmed they could see the fault however they informed me that this screen only has a 12 month warranty (I know I should have known better!!), they may replace or refund but they want to charge £179 to send out their engineer to confirm the fault, if its confirmed as a manufacturing fault then they will refund 80% value under the UK Consumer rights act, if not i'll be down £179
So I suppose i'm asking if this look like a manufacturing fault to you more informed redditors, despite it taking 18 months to show up and also if its worth me pursuing this matter as an out of warranty consumer rights claim.
I'd appreciate any advice or discussion.