Faint lines on grey background forming grid like structure on LCD TV, Phillips 7303. Is this normal?

by rime1234

Hello, I got my phillips 20 days ago, and in some point i noticed this structure, can anyone explain what is this. It forms perfect squares and it is visible mostly on gray background ( sometimes purple also) Is this tolerable? Or should I return it? I got nice deal on it so I am having second thoughts, and maybe I am to picky. Thank you! you can see my problem on this link

https://imgur.com/1UiAevQ

sawlight

It's normal, it's called " clouding ".