Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!pt.cs.cmu.edu!b.gp.cs.cmu.edu!ralf
From: ralf@b.gp.cs.cmu.edu (Ralf Brown)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Why does my computer squeak?
Message-ID: <6953@pt.cs.cmu.edu>
Date: 13 Nov 89 16:07:53 GMT
References: <5707@lindy.Stanford.EDU> <340018@hpsgpa.HP.COM> <89Nov13.102501est.18864@me.utoronto.ca>
Organization: Carnegie-Mellon University, CS/RI
Lines: 17

In article <89Nov13.102501est.18864@me.utoronto.ca> yap@me.utoronto.ca (Davin Yap) writes:
}In article <340018@hpsgpa.HP.COM> plim@hpsgpa.HP.COM (Peter Lim) writes:
}>Ever suspect the monitor ? I know some monitors which squeeks
}>when you display a big patch of bright color on screen. Sounds
}>like the coil is under some kind of stress ???
}
}This happens on my laptop too.  Explain that?

It's probably RFI getting into the loudspeaker circuit.  My first PC did the
same thing.  By the sounds coming from the speaker, I could pretty much tell
where in a program it was, even with everything in a RAMdisk....  Tight loops,
such as a delay loop or memory copy, were particularly loud.
-- 
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