Have you noticed an electronic beeping sound on TV lately?

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kx250rider
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10 Oct 2011, 7:17 am

auntblabby wrote:
League_Girl wrote:
I remember the high pitch sound from the TVs if that is what you're talking about.


have you noticed that if you're at somebody's place and they have a functioning old analog tv set [with a converter box], if you can still hear that whistle? if so, your hearing is way better than mine.


That's the noise made by the horizontal output ("flyback") transformer. All CRT tvs have one, but I am only able to hear the noise on all-tube tvs made before the 1970s; not CRT tvs that are all-solid state from the late '70s and newer. Just for the record, the noise is 15.75 kHz.

Charles



hanyo
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10 Oct 2011, 7:30 am

I just checked a tv in my house that is flat screen and digital but not one of those newer thin ones and if I put my ear to the side I hear a high pitched noise.

The newer thin lcd tv I have is silent as far as I can tell.



SabbraCadabra
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10 Oct 2011, 9:28 am

I don't watch broadcast television, and I certainly don't watch football, so no, I haven't heard it.

Though sometimes we do watch Fox Sunday nights (especially once Bob's Burgers comes back on), so I'll have to check for it.

hanyo wrote:
I've had plugs for my Nintendo DS that made a noise when plugged in. That bugged me too, even more so when I found out that not all of the plugs make that noise.


The charger for my Micro does that sometimes, it's probably one of the capacitors.


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ToughDiamond
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10 Oct 2011, 10:13 am

SabbraCadabra wrote:
Though sometimes we do watch Fox Sunday nights

You allow the lies of capitalist advertisers to enter the sacred temple of your home? 8O