Talk:Interferance signal from old computer screen
My TV does the same thing, but on the speakers. Muting the speakers stops the noise; I haven't gotten any radio to check if it also creates RFIa specific subset of electrical noise on the Electromagnetic interference (EMI) spectrum, but I'm guessing it does. The audio signal changes with updates in screen brightness and color. The TV model is the VIZIO VOJ320F1A. I'm guessing the speaker wiring is short, so it's probably a relatively high frequency signal. I'm unsure what causes it; I suspect some sort of loose wire or other cable issue?
^Update: I can provide an audio sample and spectrogram. It's not captured by radio; the noise is aurally heard, zero electromagnetic wave trickery necessary. https://youtu.be/PzLoUafN04Y Image stretched to 1080p just cuz, it's still readable.