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From: fredex@cg-atla.UUCP (Fred Smith)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Monitor problem
Message-ID: <7764@cg-atla.UUCP>
Date: 12 Oct 89 13:25:43 GMT
References: <1954@cunixc.cc.columbia.edu>
Reply-To: fredex@cg-atla.UUCP (Fred Smith)
Organization: Agfa Compugraphic Division
Lines: 28

In article <1954@cunixc.cc.columbia.edu> stone@cunixb.cc.columbia.edu (Glenn Stone) writes:
>Advice on this monitor problem would be appreciated.  The text undulates
>back & forth.  It only sways a few mm, but it's visually disturbing.  I
>tried swapping the monitor (IBM enhanced color display) and also 
>swapping the EGA card; it still does it.  It's actually quite nauseating
>to watch.  Excuse me, I think I'm going to be sick.
>
>GD Stone
>Columbia Univ.





Since TWO monitors and video cards exhibit the same symptoms, I would say that 
it sounds as if the monitor is suffering from some kind of magnetic
interference--try moving it to a different position several feet from where
it is now located and see if the symptoms change. If so, then you gotta
figure out what is generating the magnetic fields that are upsetting it.
One thing to try is moving it as far as possible away from the PC box itself.

Another possibility (although I think a rather remote one) is that the line
voltage which is powering the tube is unstable.

good luck!


Fred