The paint on the back of a CRT is called aquadag. It’s a conductive paint that, with the metal strapping and springs around the bottom of the tube, forms a capacitor that helps filter the high voltage on the anode. If this paint is severely damaged or the ground strapping is missing/damaged, you will have a noisy picture.
The paint on the back of a CRT is called aquadag. It’s a conductive paint that, with the metal strapping and springs around the bottom of the tube, forms a capacitor that helps filter the high voltage on the anode. If this paint is severely damaged or the ground strapping is missing/damaged, you will have a noisy picture.
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