Path: utzoo!mnetor!uunet!husc6!uwvax!umn-d-ub!umn-cs!brsmith
From: brsmith@umn-cs.cs.umn.edu (Brian R. Smith)
Newsgroups: comp.sys.apple
Subject: Re:  High-pitched whining.
Message-ID: <4009@umn-cs.cs.umn.edu>
Date: 20 Feb 88 23:48:56 GMT
References: <8802151123.aa06896@SMOKE.BRL.ARPA>
Reply-To: brsmith@umn-cs.UUCP (Brian R. Smith)
Organization: University of Minnesota
Lines: 11

I was being adventurous one night, and I set out to track down that whining.  It is
definitely coming from the power supply.  I suppose it could be because the 
processor is changing speeds/handling interrupts and is bouncing its power
consumption levels around.

As far as I know, it's not REALLY a problem, just a nuisance. (Like the Mac SE's
fan)

Any hardware hackers out there that are experienced with switching power supplies?

Brian