Verticals lines on my Sony Bravia XBR-65X930D

Hi guy,

I have an issue with my tvm Sony XBR-65X930D, as you can see in the the pictures bellow, horizontal lines appeart. I check on internet, some people say it is tcon board that causes problem, others say it is the Lcd pannel problem. I don’t want to buy a tcon board that will not solve that issue.

Please someone can help me to solve that problem?

Thanks.

Note: Lines are not fixed, it change according to the white area on the screen.