What exactly happens inside the TV that causes this light bleed? Bad LED, something has melted?
I would probably take it apart, and I would look at it. You don't have anything to lose.
My screen, it was replaced right after I have removed it from the box. Knock on wood, still runs OK, but I agree, that these days with all the TVs you need warranty. Specially with the expensive ones.
My thought is that is not worth spending to much on a TV these days, they will last you only a few years anyway. They break down fast, and technology advances even faster.
Living Room: Samsung UN65JS8500,Onkyo TX-NR676,Klipsch R-28F,Klipsch RC-62II,Klipsch R-14S,Polk Audio 80 FX/RT(Atmos)
Bedroom: Samsung UN55MU6290,Onkyo TX-RZ610,Onkyo & Fluance speakers
Garage: Epson 5040UB,Elite Screens 125" motorized screen,2xKlipsch RP-160M,4xKlipsch RP-150M,Klipsch RP-450C ,2xKlipsch CDT-3800II-Atmos,Klipsch R115SW,Klipsch R110SW