Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!killer!jsf007
From: jsf007@killer.DALLAS.TX.US (Steve Fintel)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Computer Whine
Message-ID: <5606@killer.DALLAS.TX.US>
Date: 23 Sep 88 12:50:18 GMT
References: <45900151@uxe.cso.uiuc.edu> <6319@xanth.cs.odu.edu>
Reply-To: jsf007@killer.Dallas.TX.US (Steve Fintel)
Organization: The Unix(R) Connection BBS, Dallas, Tx
Lines: 28

In article <6319@xanth.cs.odu.edu> rlb@cs.odu.edu (Robert Lee Bailey) writes:
>In article <45900151@uxe.cso.uiuc.edu> mcdonald@uxe.cso.uiuc.edu writes:
>>
>>I just moved my PS/2 model 80 from my very noisy lab to my nice 
>>quiet office. I now notice a very odd thing: When idling at the DOS
>>prompt the system box makes a loud, high pitched whine. When it
>>is actually running a program this ceases.

			[text deleted]

>Another highly likely culprit, is the video monitor.  Most monitors
>use a sync signal which falls in the range of 15-25 Khz.  This, of
>course, is right at the upper limit of human hearing, which makes it
>that much more annoying.

			[text deleted]

I also have a PS/2 Model 80 in a quiet room, and I also get the high pitched
whine.  In my case, it happens (intermittenly) when the machine switches in
and out of protected mode.  It is definately NOT the video monitor (I have
connected two different monitors to this machine - further, it whines with
the monitor switched off).  In either case, it's quite irritating even
though it doesn't seem to bother my dogs.

Anybody else have any ideas on what might be causing it???

Steve Fintel
killer!jsf007