[ale] Server PS shuts off for no reason

[James P. Kinney III]

Since the failure happens before the system is out of BIOS read on a
cold boot, it is all hardware. It may be power supply or mainboard. Test
with another PS without actually installing it. Just be sure the PS has
frame contact to the case for proper grounding.

Secondary cause: reset switch faulty on case. Disconnect the rest button
from the mainboard. In fact, disconnecting both power and reset buttons
makes sense. Start the system with a screwdriver to short the power
leads.

On Sat, 2006-11-18 at 13:10 -0500, Jeff Hubbs wrote:
> I really don't have another PS to put in its place (it's a low-profile
> job with a fan in a particular place, so I doubt I could buy a
> replacement easily and cheaply).  I'm pretty sure that it's not because
> of anything I've done on the OS side (including a Xen host kernel and
> lm_sensors) because last night it switched off while booted to a Ubuntu
> CD.  Right now, it has been up 12 hours on a Gentoo LiveCD, but that
> doesn't mean much - it went for 24 just a day or so ago. 
> 
> I've got a message in to SuperMicro - we'll see if I wind up just RMAing
> the whole thing.
> 
> - Jeff
> 
> Benjie wrote:
> > This sounds like either a bad power supply, or a bad power control
> > circuit on the mainboard.
> > ( It could be something as simple as a bad capacitor.)  Can you hook
> > up another power supply?  ( The power LED would stay on even if the PS
> > is bad because you would be getting some power, just not enough to run
> > the machine.)
> >
> > Benjie
> >
> > On 11/18/06, Gonzalo Seoane <gonzas at gonzas.net> wrote:
> >   
> >> this is a hardware failure .
> >> check again ,..
> >>
> >> 2006/11/18, Jeff Hubbs <hbbs at comcast.net>:
> >>     
> >>> I have a SuperMicro 5013C-T 1U server that I've been setting up over
> >>> many weeks and just recently, it's started shutting itself off after a
> >>> period of seconds (i.e., not even long enough to finish booting),
> >>> minutes, or even many hours.  The interesting thing about this is that
> >>> the power LED on the front panel remains on.
> >>>
> >>> Are there any non-hardware-failure things I should check?  I can't
> >>> correlate these shutoffs to any one thing I might have done, especially
> >>> since I've been doing a great many things (none of which have been
> >>> knowingly tied to any sort of wake-on-lan, etc.).
> >>>
> >>> I've updated the BIOS and tried booting with pci=noacpi; no joy.
> >>>
> >>> - Jeff
> >>> _______________________________________________
> >>> Ale mailing list
> >>> Ale at ale.org
> >>> http://www.ale.org/mailman/listinfo/ale
> >>>
> >>>       
> >>
> >> --
> >> Gonza
> >> www.gonzas.net
> >> gonzas at gonzas.net
> >> _______________________________________________
> >> Ale mailing list
> >> Ale at ale.org
> >> http://www.ale.org/mailman/listinfo/ale
> >>
> >>
> >>     
> >
> >
> >   
> 
> _______________________________________________
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> Ale at ale.org
> http://www.ale.org/mailman/listinfo/ale
-- 
James P. Kinney III          
CEO & Director of Engineering 
Local Net Solutions,LLC        
770-493-8244                    
http://www.localnetsolutions.com

GPG ID: 829C6CA7 James P. Kinney III (M.S. Physics)
<jkinney at localnetsolutions.com>
Fingerprint = 3C9E 6366 54FC A3FE BA4D 0659 6190 ADC3 829C 6CA7
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