u/HexerRush

I habe two CRTs; one I'm not using at the moment. The one I do use has never had any issues until just about 20 minutes ago. It's foing this weird slow flicker and every time the screen reverts back to whatever image it's projecting, it sounds like a bird chirping. I'm assuming this may be defective hardware since it is pretty old, but I was just wondering if anyone here had any specific diagnosis for it, and if there's a possible solution for it. For those who may ask or are wondering, it's an Envision EN-510.