Squealing CRTs

From: Charles E. Fox <foxvideo_at_wincom.net>
Date: Mon Oct 1 05:18:58 2001

At 04:09 AM 01/10/2001 +0100, you wrote:
>Heller to everyone and Tony. ;-)
>What do you do about a squealing CRT? I've got this nice terminal which is
>working, but it emits a high-pitched whine which is not only unpleasant and
>annoying, but quite scary, too. It feels as thoughit's going to blow in your
>face any minute.
>The terminal in question is a green-screen TECO VA120.
>En ligne avec Thor 2.6a.
>Ky?suke: Jag heter Kurre, Kurre Carlsson!
>Jag: Det heter du inte alls!

         Assuming the CRT doesn't have a crack in it, in which case it wont
squeal long, it sounds like a horizontal output transformer that is
vibrating at an audible frequency.
         You might try tightening any screws you find around the core of
the H.O.T. (With the power off and the circuit discharged.)

                                 Charlie Fox
                         Chas E. Fox Video Productions
                         793 Argyle Rd. Windsor ON N8Y 3J8
                                 Check out:
                  Camcorder Kindergarten at http://chasfoxvideo.com
Received on Mon Oct 01 2001 - 05:18:58 BST

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