Was this old enough to be a CRT TV? Their flyback transformers [1] very often emit a sound of 15.6 kHz, which is very obvious to all younger people and unnoticeable for older folks. I feel I was especially susceptible to this noise, and would frequently change rooms to escape it if the TV was on.

I whole-heartedly welcomed the change to flat TVs and monitors.

[1] https://en.wikipedia.org/wiki/Flyback_transformer