Samsung 4k TV issue

[Sammy2015]

Firstly sorry if it's not in the right sub forum

I have a js8500 and it's had about four screens and after that the insurance paid out as reckoned it won't get any where near as perfect as I'm imagining.

I have lessened some edge bleed clouds from taking the back off and loosened the internal bezel / frame. I will be looking into taking the full LCD out and finding any gaps and block. (I have read on here from a few years back someone had torn down a Dell monitor passed the screen layer and successfully plugged up some light bleed ) Sorry I digress I love the js8500 , the colours are lush and compared to a lot of other TVs still holds its own .

Since the second from last repair I have had a outline box about 2 inches away from the bezel frame and is around the whole TV screen. I turn Back/L almost off and different brightness and contrast and it fades abit. Since I loosened the internal frame, it shows up on different colours now grr. So I'm wondering if this is retention / banding or if i can get to the LEDs, it's the interior sheet that needs some blocking?

Or I just chalk it up to what it is and bias light it up?

I have attached a couple of pictures from when it came back the last time. Sorry if it sounds like a ramble

 

[Sammy2015]

I was thinking of doing something like

https://hardforum.com/threads/2005fpw-backlight-bleed-fix.1032268/

Has anyone recently done or attempted this ?

 

[Sammy2015]

I spent the afternoon tearing the screen down, packing out with tape , got back together, the first few minutes fine , no bleed, walked out of room then....