From owner-freebsd-hackers@FreeBSD.ORG Sat Oct 2 15:10:49 2004 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4EBA116A4CE for ; Sat, 2 Oct 2004 15:10:49 +0000 (GMT) Received: from mail.farley.org (farley.org [67.64.95.201]) by mx1.FreeBSD.org (Postfix) with ESMTP id DB48F43D1F for ; Sat, 2 Oct 2004 15:10:48 +0000 (GMT) (envelope-from sean-freebsd@farley.org) Received: from thor.farley.org (idwprlayki79lzw3@thor.farley.org [IPv6:2002:4340:5fcd:1::5]) by mail.farley.org (8.12.11/8.12.11) with ESMTP id i92FAlvf008796; Sat, 2 Oct 2004 10:10:47 -0500 (CDT) (envelope-from sean-freebsd@farley.org) Received: from thor.farley.org (localhost [127.0.0.1]) by thor.farley.org (8.13.1/8.13.1) with ESMTP id i92FAlKg006662; Sat, 2 Oct 2004 10:10:47 -0500 (CDT) (envelope-from sean-freebsd@farley.org) Received: from localhost (sean@localhost)i92FAkp0006659; Sat, 2 Oct 2004 10:10:47 -0500 (CDT) (envelope-from sean-freebsd@farley.org) X-Authentication-Warning: thor.farley.org: sean owned process doing -bs Date: Sat, 2 Oct 2004 10:10:46 -0500 (CDT) From: Sean Farley X-X-Sender: sean@thor.farley.org To: Jim Durham In-Reply-To: <200409301003.00492.durham@jcdurham.com> Message-ID: <20041002095910.Y4180@thor.farley.org> References: <200409301003.00492.durham@jcdurham.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed cc: freebsd-hackers@freebsd.org Subject: Re: Sudden Reboots X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 02 Oct 2004 15:10:49 -0000 On Thu, 30 Sep 2004, Jim Durham wrote: > I have had this problem now with at least 3 FreeBSD servers over a > period of about 2 years. I had put it down to some hardware problem > but it seems to be too much of a coincidence with 3 different machines > doing the same thing. I had sudden reboots over a period of two years. Recently, they started happening more often. It turned out that the capacitors had gone bad. Capacitors from about two to three years ago used a poor formula. This site has information about it: http://www.badcaps.net/. The interesting thing for me was that the capacitors did not show any signs for about two years. They looked like they had flat tops without leaking. I think they may have spilled their guts when, I turned the computer off for about a week for a vacation. They must have missed me. :) In case the power supplies are over-taxed, here is an on-line calculator: http://takaman.jp/D/index.html?english. Sean ----------------------- sean-freebsd@farley.org