Wow, I thought I was the only one with the TV thing! I remember it as young as 4-5, but no one knew what I was talking about. I’ve had constant minor tinnitus since then, so I can’t help but feeling like there’s a CRT near my head that has been running since the early nineties.
I also could hear CRT when on (probably high voltage PSU) as a kid. Recently, I thought my tinnitus got worse until I found that one of my smart power supplies started making high pitch sound (ceramic capacitors in power supplies cause it).