first thing first,
you must check all of the wires and cables are properly placed as well as tightly plugged in.
to ensure that no loose wires as well as static is present that might cause the disruption of the waves.
you have to check for the panels at the back.
Check if the cables are properly placed.
This is the usual problem when these lines appear.
Sometimes the cables as well as wires of the LCD are the ones who are really loose so you have to let the Technician Check for the LCD instead of experimenting stuffs if these advices won`t work.
For other concerns please check this site: