Damper wire
Using a white background, a very thin horizontal line on the screen may be visible as shown below. This line is the damper wire.
The Trinitron tube has a vertically striped Aperture Grille inside. The Aperture Grille allows more light to pass through to the screen giving the Trinitron CRT more color and brightness.
The damper wire is attached to the Aperture Grille to prevent vibration of the Aperture Grille wire so that the screen image is constantly stable.
Approx. 6 cm (2 3/8 inches)
Damper wires
Approx. 6 cm (2 3/8 inches)
16 Using Your Display