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From: alex@sdcsvax.UUCP (Alex Pournelle)
Newsgroups: net.audio
Subject: Re: VDTs and their whines
Message-ID: <937@sdcsvax.UUCP>
Date: Thu, 5-Jul-84 01:12:30 EDT
Article-I.D.: sdcsvax.937
Posted: Thu Jul  5 01:12:30 1984
Date-Received: Sun, 1-Jul-84 08:13:11 EDT
Organization: Alex Pournelle @ UC San Diego; freelance writer
Lines: 8

I think the freq you're referring to is 15750 Hz, caused by the flyback
transformer--unless you have a very high-performance tube (color hi-res,
etc).  Many people "tune it out", whether they can hear it or not.  Some
of this noise is usual, a whole lot may be caused by a bad flyback (or
other driver section component).  "refer to qualified service
personnel", as they say, and ask 'em if they can quiet it down.

Alex