Grid pattern on screen

Alfa 1971

Hi all, I hope someone can help, I've just purchased a new 66 inch va panel tv and when I'm watching it there is a faint grid pattern on the picture... Any ideas and is there a fix? It's driving me nuts.

JayCee

Welcome.
It's customary to post the brand and model when asking for help, also, a grid pattern, when viewing what source?

desinho

Must be a Samsung QLED?

simonlewis

I didn't know that tvs come in 66".