LG 42q2000 problem

[vinootje]

https/www.youtube.com/watch?v=TWKLYBUqR8U&feature=youtu.be

This happens when the tv is cold and warm anyone might know why this problem is showing and how to fix it ?

 

[schwatzz]

Make sure the cables are inserted properly, otherwise it seems the tv is defective.

 

[vinootje]

it doesnt only happen at HDMi 3 port but at all HDMI and all AV ports