Date: Wed, 20 May 2020 10:50:09 -0500 From: Tim Daneliuk <tundra@tundraware.com> To: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: OT: Weird Hardware Problem Message-ID: <8b13e2f5-6ff4-ecc2-7036-c88cff0f5b6b@tundraware.com> In-Reply-To: <0a9f810d-7b4b-f4e6-4b7c-716044a9cf69@tundraware.com> References: <0a9f810d-7b4b-f4e6-4b7c-716044a9cf69@tundraware.com>
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On 5/19/20 8:46 AM, Tim Daneliuk wrote: > I was recently given a Dell Inspiron 3847 which has an i7-4790 and 16G > of memory. Perfect for multibooting BSD and Linux. It needed a new power > supply but now that this is installed, it's exhibiting a very strange > problem. > > The machine will work for hours flawless and then - for no apparent reason - > reboot randomly. The former owner reports that this was also happening > when they last had it running Win8. All signs point to an inadequate power supply. When I initially got the machine, I had to replace the onboard supply because the fan bearings on it were bad and loud. The former owner reported that the machine had - in fact - been experiencing random reboots of late. I replaced the old supply with a "good" used 500W ATX supply and the reboot problem was still noted as above. This morning, I pulled the used supply and put the only new PS I have in stock - at 350W ATX unit - and tried to recreate the problem I'd been able to force consistently before during Linux install. Voila! It worked. Now I need to monitor this thing for the next day or so to ensure that the problem is - indeed gone. Interesting that a new 350W supply does the trick when an apparently working 500W didn't. As someone pointed out, this could well be old electrolytics not holding the rail voltage well under stress. ---------------------------------------------------------------------------- Tim Daneliuk tundra@tundraware.com PGP Key: http://www.tundraware.com/PGP/
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