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Psu Problems


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#1 petergriffinlol

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Posted 15 November 2006 - 04:32 AM

Hello Hello. Lets start with my pc specs

Asus K8N mobo
Athon 2800+ 64 clawhammer 512 L2 1.8g
512 Nanya pc3200 ddr
Enermax 431w EG465P-VE FC...specs below
Sapphire Radeon 9600xt 256
Maxtor 120g sata HD
cd/rw drive unknown brand
dvd rom drive unknown brand

A while back, I had a el-cheapo psu in my puter, a kyoto 480w with a 17a +12v rail
it always ran fine, one day my WD HDD crashed. I replaced with my SATA drive mentined above. less than a week later, My asus probe was telling me that the +12v rail was reading around 10.6-10.8 when playin AOE 3 or some other games, It would only drop for a second and when i minimized the game it would go up to around 11.3. I thought it was my psu so i bought the one mentioned above...specs below. Asus probe still showed the 12v alarm.I checked the bios to find the +12v running at 11.7 so i sat and waited for a while. It eventually dropped to 11.1 in the bios. its a bit odd to find 2 psu having the same problem. Im looking for any suggestions on what i can do. The computer isnt shutting down or restarting, my temps are within normal limits. All is good but the +12v.



AC Input 115V @ 12A, 230V @ 7A
DC Output +3.3V @ 35A, +5V @ 35A, +5VSB @ 2.2A, +12V @ 33A, -5V @ 1A, -12V @ 1A

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#2 dc3

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Posted 15 November 2006 - 04:48 AM

I would be interested in seeing what the voltage is when read with a dmm. Those specs in the BIOS are not always 100% accurate.

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#3 petergriffinlol

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Posted 15 November 2006 - 04:52 AM

how low does it have to go before i will physically notice anything....ie shutdown, restart. Ive considered a voltmeter but between my jobs i dont have time to sleep let alone go to the store and get one. I will try though.

#4 Mr Alpha

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Posted 15 November 2006 - 04:54 AM

Could be that the winbound chip that is reading the voltages is having problems. You could check the power supply with a multimeter.
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#5 petergriffinlol

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Posted 15 November 2006 - 04:58 AM

never had to check one before with a MM, do i check it attatched to the mobo....better yet, is there a site showign pics on where to check it so i dont blow my puter up?

#6 Mr Alpha

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Posted 15 November 2006 - 06:25 AM

better yet, is there a site showign pics on where to check it so i dont blow my puter up?

Better yet, it has videos!
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#7 usasma

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Posted 16 November 2006 - 08:37 PM

Great link Mr_Alpha! Thanks!
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#8 dc3

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Posted 17 November 2006 - 12:00 PM

how low does it have to go before i will physically notice anything....ie shutdown, restart. Ive considered a voltmeter but between my jobs i dont have time to sleep let alone go to the store and get one. I will try though.



The 12V rails will have a little head room for a voltage drop, but with the 5V and 3.3V rails the voltages are already so small that a half volt deficiency can cause instability issues with your computer.

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