Comment by bsimpson
I've always been someone who hears high pitched noises that "normal" people don't. I'm also in my 30s, and I'm sure those "teenage alarms" in Japan would work on me. I was the one who would walk up to a CRT and turn it off when everyone else thought it already was.
What helped me accept (and ignore) tinnitus was realizing that I had already grown accustomed to tolerating that sound indoors. When's it's something you have no agency over (like "it's an old house and the wires just make that sound sometimes"), you learn it's part of the environment.
Accepting it as part of the environment gets you past the "OMG my body is ruined forever" anxieties and back to normal life.
By the way, that CRT squeel is the sound of the flyback transformer, which operates at 15.625 kHz for PAL and 15.734 kHz for NTSC sets.