Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!munnari.oz.au!diemen!tasman!steveh From: steveh@tasman.cc.utas.edu.au (Steven Howell) Newsgroups: sci.electronics Subject: Whisiling power supply Message-ID: Date: 18 Dec 90 13:44:37 GMT Sender: news@diemen.utas.edu.au Distribution: sci Lines: 9 Does anyone have any ideas, why a power supply (SMPS) would create such an irritating high pitch squeal. I thought The chopper may require replacing, but being a major task, I thought I might get some options first. Thanks.... Steve h