From owner-freebsd-questions@FreeBSD.ORG Wed Feb 27 05:57:14 2008 Return-Path: Delivered-To: questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 54E4E1065671 for ; Wed, 27 Feb 2008 05:57:14 +0000 (UTC) (envelope-from tedm@toybox.placo.com) Received: from mail.freebsd-corp-net-guide.com (mail.freebsd-corp-net-guide.com [65.75.192.90]) by mx1.freebsd.org (Postfix) with ESMTP id 15F9013C4E1 for ; Wed, 27 Feb 2008 05:57:13 +0000 (UTC) (envelope-from tedm@toybox.placo.com) Received: from TEDSDSK (nat-rtr.freebsd-corp-net-guide.com [65.75.197.130]) by mail.freebsd-corp-net-guide.com (8.13.8/8.13.8) with SMTP id m1R5vATZ014694; Tue, 26 Feb 2008 21:57:13 -0800 (PST) (envelope-from tedm@toybox.placo.com) From: "Ted Mittelstaedt" To: "D G Teed" , "DAve" Date: Tue, 26 Feb 2008 21:58:12 -0800 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1914 In-Reply-To: Importance: Normal X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.0 (mail.freebsd-corp-net-guide.com [65.75.192.90]); Tue, 26 Feb 2008 21:57:13 -0800 (PST) Cc: FreeBSD Questions Subject: RE: hardware problem X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Feb 2008 05:57:14 -0000 > -----Original Message----- > From: owner-freebsd-questions@freebsd.org > [mailto:owner-freebsd-questions@freebsd.org]On Behalf Of D G Teed > Sent: Monday, February 25, 2008 7:22 AM > To: DAve > Cc: FreeBSD Questions > Subject: Re: hardware problem > > > Every system I've seen with his description of the problem, where > the power supply can't even run it's own fan, is having a power supply > problem. Power supplies are very often low quality these days and can't > handle the stresses of typical electrical grid fluctuations. My experience has not been that the power supplies can't handle the electrical grid. What I've mostly seen is that the power supply FANS get dust in them, the fans slow down or stop, airflow through the supply drops, and then the supply overheats. Once it overheats, the supply will never be reliable again and must be thrown out. Turning off a computer for a while that has an overheated power supply is a surefire way to have the supply never restart again. Ted