Vertical line shadow appeared in the middle. What to do?

Hey Kaisiquian,

Are the lines permanent or are they moving?

If they are moving check the input connection (display port, HDMI, PC) Maybe try removing the connection and re-establish it.

Do the lines appear when the TV menu is up?

There should be a self diagnostic test built into the TV that you could also look into. It should have a ‘Picture Test’

If the lines are permanent, you may want to call a support number, unless you want to physically change your own huge screen.

Hope this helps.