I definitely heard it in the 90s, in 1990/1991 my university had a lab full of televideo 910 and 905 terminals that were maybe 5 years old, suffering from massi

I definitely heard it in the 90s, in 1990/1991 my university had a lab full of televideo 910 and 905 terminals that were maybe 5 years old, suffering from massive burn-in and a lot of them whined really bad, giving me a headache if I had to use them (the 905s seemed to be worst at this). My first job also involved a dec vt240 with the same features - really badly burnt-in display and horrific coil whine that made me go home with a migraine at least twice that I remember.