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+12v rail is at +13v. Is that bad?

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June 25, 2006 4:25:44 PM

+12v rail is at +13v. Is that bad?

More about : 12v rail 13v bad

June 25, 2006 4:37:30 PM

how does that make sense?


how can a 12v rail be at 13v then it isnt a 12v rail is it?
June 25, 2006 5:01:58 PM

Quote:
+12v rail is at +13v. Is that bad?

Yes.

What kind of power supply is it and what are the rest of your system components?

-mcg
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June 25, 2006 5:34:29 PM

Quote:
how does that make sense?


how can a 12v rail be at 13v then it isnt a 12v rail is it?



Hmmm. When you said he doesn't make sense, that doesn't make
sense to me. Make sense?
June 25, 2006 5:58:25 PM

The power supply came with a case that a friend of mine bought. I have used it for less than a month. It is a Turbolinx model LC-A420ATX so i assume that means 420 watts. It has 28 amps on the +12v rail. In speedfan it is showing anywhere from 13-13.2v. I unplugged one HD and the big case fan and the voltage stayed the same. For some reason it shows 2 +5v with one at 4.8v and the second at 6.85v.



SYSTEM SPECS
3 Hard Drives
1 Dvd-r
1 120mm case fan
1 80mm case fan
1 radeon 9000pro graphics card in a 4x agp slot
Athlon xp 2400+
512mb kingston ddr 2700 ram
crappy old emachines motherboard with a via chipset
June 25, 2006 6:46:22 PM

Well, rails are meant to be less than 5% out, but how can 12v be at 12.1v on a 12v rail? Its still the 12v rail.

So saying 'its not a 12v rail then is it' is pretty silly.

13v is way out of spec but, software never gives an accurate reading. Although, its never normally a whole volt out my worst is normally 12.23v

The thing to do is to test your PSU with a multimeter.
June 25, 2006 7:04:17 PM

Test the power supply with one multimeter. In one molex (hard drive conector) you can found ground, 5v and 12v if 12v is more than 12.3 you can damage harddrive, graphics card, etc.
June 25, 2006 7:06:23 PM

You are loking voltages by software?

Try first seen it in the BIOS.
June 25, 2006 7:57:04 PM

Quote:
You are loking voltages by software?

Try first seen it in the BIOS.


i dont think bios lists the voltage on the rails, i've heard speed fan do it, but speed fan also told me i has 4 fans...when i only had 2..soo
June 25, 2006 8:54:52 PM

Phoenix Bios show all the motherboard voltages. You can't know the second 12V but if you don't have a multimeter it could help you.
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