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A bit of a longshot....

post #1 of 11
Thread Starter 
Okay, after my previous PSU died after a simple dust out, I got a new one hoping I'd now have a +12v reading, but to my surprise, even at bios level, I still get 0.00v on the 12v line, which is obviously wrong, otherwise I wouldnt be talking now. rolleyes.gif

Now, a couple of times, ive fell victim to the bad CPU retention bracket thing where the CPU comes off attached to the heatsink and I've had a load of bent pins because of it. I was wondering, if one of the pins wasn't lined up right, or if one is actually missing, and I haven't noticed, could that be the cause of my non existent 12v reading? I did a quick Google of Phenom II pinouts but couldn't find anything

Just to clarify, I've had an Asus 780a and now I'm on this Gigabyte 790x and both have shown 0.0v for the +12v line @ bios level.
    
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post #2 of 11
have you tried a power supply tester to check the readings?
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post #3 of 11
Thread Starter 
No, I highly doubt its my PSU, my previous Multi-Railed Thermaltake showed nothing on the +12v and now I have a single-rail XFX Pro Series and that also shows the +12v to be nothing.

Its not essential that I find the route cause, its not causing any problems and I'm assuming its just a bad reading, It was just something I was pondering over when I reinstalled AMD Overdrive smile.gif
    
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post #4 of 11
Well I'm guessing no pins fell off because I have had 1 pin fall off on a P4 and it wouldn't even boot I would say it is something glitchy with the Motherboard.

Try a bios update if you haven't updated it lately.
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post #5 of 11
Software voltage readings of the PSU should never be taken seriously. If you are curious then use a Multi-meter to test with.
post #6 of 11
Thread Starter 
Yeah, I had a feeling it was a longshot with the CPU pins, I did remember with old Athlons you could pin mod them to do crazy stuff, so I guessed with a missing/mis-aligned one, you could lose functionality? tongue.gif

I'm on the latest bios F10C and the previous bios's did the same. I have just noticed that Aida64 is reading it as 12.387 and it fluctuates a tiny bit so I'm guessing thats kinda right, I know software readings are usually not to be trusted... but better than no reading at all smile.gif
    
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post #7 of 11
Take your tongue and stick it against the 12V rail and report back with the results.

(Don't honestly do that, I just have to say this because there are some people that would...)
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post #8 of 11
Thread Starter 
Haha for a split second, I took what you said seriously, I didn't quite clock on straight away tongue.gif

Its not a major problem, its just a little niggle I have with my setup amongst others, and my CPU is the only thing that has stayed the same during upgrade/replacements. Thats what gave me the idea of messed up pins smile.gif

Oh well, ill have to invest in a PSU tester, would a cheapo multimeter work? It was £5 I think. I have it somewhere from a 'solderless' volt mod attempt which did nothing tongue.gif
    
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post #9 of 11
Quote:
Originally Posted by donk165;12316329 
Okay, after my previous PSU died after a simple dust out, I got a new one hoping I'd now have a +12v reading, but to my surprise, even at bios level, I still get 0.00v on the 12v line, which is obviously wrong, otherwise I wouldnt be talking now. rolleyes.gif

Now, a couple of times, ive fell victim to the bad CPU retention bracket thing where the CPU comes off attached to the heatsink and I've had a load of bent pins because of it. I was wondering, if one of the pins wasn't lined up right, or if one is actually missing, and I haven't noticed, could that be the cause of my non existent 12v reading? I did a quick Google of Phenom II pinouts but couldn't find anything

Just to clarify, I've had an Asus 780a and now I'm on this Gigabyte 790x and both have shown 0.0v for the +12v line @ bios level.
So you're measuring in HWMonitor I presume?? Use a voltmeter and attach a metal paper clip to the green wire on the 24 pin to any of the black wires. Then take a measurement of the voltage on the voltmeter attaching the red alligator clip to any yellow wire and the black one to any black wire and there you'll have your reading. Or you could always spend like $40 for that Antec PSU tester but this way works too.

Also I'd advise you to RMA your chip. How you've made the mistake of not having that clip attached more than once is beyond me! I used to use a Phenom II, so I know, I made that mistake too, but we're supposed to learn from our mistakes. That line is not lip service, so pay heed.
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post #10 of 11
Thread Starter 
Quote:
Originally Posted by jadawgis732;12316700 
So you're measuring in HWMonitor I presume?? Use a voltmeter and attach a metal paper clip to the green wire on the 24 pin to any of the black wires. Then take a measurement of the voltage on the voltmeter attaching the red alligator clip to any yellow wire and the black one to any black wire and there you'll have your reading. Or you could always spend like $40 for that Antec PSU tester but this way works too.

Also I'd advise you to RMA your chip. How you've made the mistake of not having that clip attached more than once is beyond me! I used to use a Phenom II, so I know, I made that mistake too, but we're supposed to learn from our mistakes. That line is not lip service, so pay heed.

Im using Aida64 - Everest's successor, but even in the bios under PC health, it says +12v = 0.0v but all other lines are fine.

RMA is outta the question because I lapped it a while back, probably not worth the effort & warrenty voiding, the IHS was convex but wasnt that bad. The chip doesn't show any problems, I've been up to 3.8ghz with it and run 3.7 for day to day, this chips been through quite a bit actually, 3 instances of bent pins which took ages to bend back, a lapping job which took ages and i wasn't 100% confident with it, and then running fanless on my Baram while diagnosing some issues, only took 5 mins and it was up to 80 something degrees!

I think its done well considering my abuse tongue.gif, to only have a dodgy 12v reading isn't too bad, I'm not sure when the issue of no 12v reading came to be, I just noticed one day when changing memory timings.

Anyway, back on topic, once I find the multimeter, ill test the 12v out, thanks for clarifying the wire to check.

Also, the clip you speak of, do you mean the retention bracket lever? I've had that down every time, all you need is some Ceramique paste and a bulky cooler and your CPU will come out with the heatsink, its pretty common according to other threads I've read. You have to unclip the heatsink then twist it off to unstick the paste, my previous heatsink didnt allow me to twist it off, so thats why its had so many bent pin incidents.
Edited by donk165 - 2/8/11 at 7:19pm
    
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