My Samsung UE KS8000 has only just started to do this and I’m out of manufacture warranty by 6 months. I have a Richer sounds 6 year guarantee and I’ve been in touch with them and I’m sending photos to them to see what their engineers think. The bleed type effect only affects lighter greys and colours. The grey in that area goes a bit green. It’s like a 15-20mm band around the screen, mostly visible on the lower half of the screen edges. I don’t think it’s light bleed as when I have black bars there isn’t any light bleed and the bars are black. The strange thing is that it’s only started over the last week or so. The problem is on all sources and apps. The brightness is at 45 The contrast is at 98 The backlight is at 12 Set to movie and warm 1.