[mythtv-users] Humming Noise coming from LCD tv

[Larry Finger]

On 04/01/2014 03:36 AM, Simon Hobson wrote:
> Stephen P. Villano <stephen.p.villano at gmail.com> wrote:
>
>> (*My first thought*) was, *what* kind of hum is it?
>
> Good point
>
>> Back when I repaired televisions, I even heard a complaint about 10khz hum!
>> That last was repaired by a filter, as interference caused it due to
>> proximity to several high power television stations. The trick was
>> learning what the frequency was and knowing what the other frequencies
>> were and her IF frequency.
>
> I can vaguely recall the days (long time ago now) when I could hear the 15.625kHz (UK PAL) whine from the TV horizontal scan circuits. The things modern youngsters miss out on :D

If technology hadn't taken that away, then age would have. Of course many of 
today's youngsters have lost high frequencies from too much exposure to loud sounds.