Does anyone have a spare ATX power supply? Mine seems to have a problem. Specifically, when I run the CPUID Hardware Monitor, it reports these voltages: [image: Inline image 1]
The numbers for -12V concern me. :-) The columns are Current/Min/Max, respectively. So if you have a power supply that's taking up space that you'd like to reclaim, please let me know and bring it to the next MUUG meeting.
As it happens, I'll be bringing some valuable (I hope) hardware items to the meeting as free giveaways. I sure hope there are some takers!
Kevin
P.S. If the image inserted above doesn't show up due to filtering en route, the -12V reading is around -6.21V. I'm using the system as we speak, so I guess the -12V line doesn't do much that I regularly rely on, though I have experienced some system oddness lately which may well be explained by this.
If you have a motherboard with energy saving / power conservation technology, this may be normal. Try disabling any power saving stuff, see if voltages return to normal.
Rob Dyck
I thought all current motherboards had energy-saving technology! I also thought the voltages reported would be those straight from the power supply, before any power-saving stuff happened. Sort of a power-supply diagnostic. I'll poke around in the BIOS a bit. If I had a known-good power supply, swapping it out would be revealing.
On Sun, Oct 7, 2012 at 10:38 PM, Robert Dyck rbdyck2@shaw.ca wrote:
If you have a motherboard with energy saving / power conservation technology, this may be normal. Try disabling any power saving stuff, see if voltages return to normal.
Rob Dyck _______________________________________________ Roundtable mailing list Roundtable@muug.mb.ca http://www.muug.mb.ca/mailman/listinfo/roundtable
On 2012-10-07 Kevin McGregor wrote:
The numbers for -12V concern me. :-) The columns are Current/Min/Max,
(sorry, really late reply)
Ha! LOL, -12V at -6V, that's funny. If that was true your system would not be POSTing. 99% for sure it's just the mobo lying to you. Lots of them lie or go wonky.
Also, could be a sign of badcaps on the motherboard, so take a look.
PS's are also badcap-prone these days, but in this case I doubt that's the problem as it's got to be a detection error, not a PS-voltage-output error. BTW, if your PS is out of warranty, pop it open (usually 4 screws), but DON'T do that while it's plugged in (and wait 60s or hit the power button to drain the big caps first). I once touched a PS heatsink while it was on... not making that mistake again!
Plug the PS into a PS tester (I can bring one to a meeting but I can't lend it out, I use it nearly every day in my business) to find out what it really is putting out.
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Kevin McGregor -
Robert Dyck -
Trevor Cordes