High definition monitor has two small lines across it
Issue
High definition monitor has two small lines across it.
Cause
Two thin lines are normal for an aperture grille monitor, and are not a malfunction. These are shadows from the damper wires used to stabilize the aperture grille and are most noticeable when the screen's background is a light color.
Solution
This is a normal function of the characteristics of the monitor therefore is not a defect with the monitor. If you have more than two lines or these lines move you likely have a monitor defect.