power supply fan always on

sst1226 · 11-23-2008, 04:16 AM

Hi,
I have an antec power supply 350W that when I completely shut down, the fans on the PSU keep running. I have to actually flip the switch on the back of it to shut them off. I have unplugged all optical and HDD drives from the MB and PSU, and still the fans run. Could it be the PSU is bad (like maybe a short), or is it something else. When I boot up I get the "DISK FAILURE" screen. I unplug and re-plug in the HDD using the ribbon cable and then it boots up and works fine. It is a new ribbon cable. It happened using the the old cable as well.

Any suggestions would be greatly appreciated!
Thanks

sst1226

**wrench97** · 11-23-2008, 05:02 AM

The fan continuing to run is most likely a PSU failing the second problem with the hard drive may or may not be related.
Do you have or can you borrow one to test with?

sst1226 · 11-23-2008, 05:17 AM

thanks for the quick response. I don't have another PSU or tester. That was my thought that the unit may have seen its last leg. Any suggestions on another one. I have 2 optical drives and 2 HDD's, and 1 FD, & 256mb video card. the motherboard has the 20 pin + 4 connector.

thanks

sst1226

**wrench97** · 11-23-2008, 05:33 AM

Do you know which video card and is it AGP or PCIe?

sst1226 · 11-23-2008, 05:52 AM

Video card is a nvidia geforce fx 5200 128mb ( I initially stated 256). It is an AGP card

**wrench97** · 11-23-2008, 06:21 AM

This is a good solid unit> http://www.newegg.com/Product/Produc...82E16817703014

sst1226 · 11-23-2008, 06:33 AM

Thanks so much for your help and imput. I will definetly look into that one. You have a GREAT day now!

sst1226

dai · 11-23-2008, 07:21 AM

some power supplies are programed to keep runing until the system tempreture drops then close down
a 350w psu is light on for recent computers

sst1226 · 11-23-2008, 08:40 AM

I wasn't aware of that. It never did that before, and I never got the "DISK FAILURE" error before either. So I am inclined to believe there is a problem elsewhere, as stated in my earlier posts. Thanks for the info!

sst1226

dai · 11-23-2008, 08:56 AM

are you using an 80 wire ide cable on the drives

sst1226 · 11-23-2008, 10:04 AM

no 40 wire

**magnethead** · 11-23-2008, 12:15 PM

Quote:

Originally Posted by sst1226

no 40 wire

get a new CPU, and if the drive is greater then 127 GB, get a 80 cable.

I've actually had problems with HDD's under 127 and/or old motherboards. But it's a big factor in error reduction

**wrench97** · 11-23-2008, 12:42 PM

Quote:

Originally Posted by magnethead

get a new CPU, and if the drive is greater then 127 GB, get a 80 cable.

I've actually had problems with HDD's under 127 and/or old motherboards. But it's a big factor in error reduction

CPU? maybe PSU Magnet?

11-23-2008, 04:16 AM	#1 (permalink)
sst1226 Registered User Join Date: Aug 2006 Location: Pa Posts: 59 OS: windows xp	power supply fan always on Hi, I have an antec power supply 350W that when I completely shut down, the fans on the PSU keep running. I have to actually flip the switch on the back of it to shut them off. I have unplugged all optical and HDD drives from the MB and PSU, and still the fans run. Could it be the PSU is bad (like maybe a short), or is it something else. When I boot up I get the "DISK FAILURE" screen. I unplug and re-plug in the HDD using the ribbon cable and then it boots up and works fine. It is a new ribbon cable. It happened using the the old cable as well. Any suggestions would be greatly appreciated! Thanks sst1226

11-23-2008, 05:02 AM	#2 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,544 OS: Win7	Re: power supply fan always on The fan continuing to run is most likely a PSU failing the second problem with the hard drive may or may not be related. Do you have or can you borrow one to test with? __________________ Power Supply and Selection

11-23-2008, 05:17 AM	#3 (permalink)
sst1226 Registered User Join Date: Aug 2006 Location: Pa Posts: 59 OS: windows xp	Re: power supply fan always on thanks for the quick response. I don't have another PSU or tester. That was my thought that the unit may have seen its last leg. Any suggestions on another one. I have 2 optical drives and 2 HDD's, and 1 FD, & 256mb video card. the motherboard has the 20 pin + 4 connector. thanks sst1226

11-23-2008, 05:33 AM	#4 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,544 OS: Win7	Re: power supply fan always on Do you know which video card and is it AGP or PCIe? __________________ Power Supply and Selection

11-23-2008, 05:52 AM	#5 (permalink)
sst1226 Registered User Join Date: Aug 2006 Location: Pa Posts: 59 OS: windows xp	Re: power supply fan always on Video card is a nvidia geforce fx 5200 128mb ( I initially stated 256). It is an AGP card

11-23-2008, 06:21 AM	#6 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,544 OS: Win7	Re: power supply fan always on This is a good solid unit> http://www.newegg.com/Product/Produc...82E16817703014 __________________ Power Supply and Selection

11-23-2008, 06:33 AM	#7 (permalink)
sst1226 Registered User Join Date: Aug 2006 Location: Pa Posts: 59 OS: windows xp	Re: power supply fan always on Thanks so much for your help and imput. I will definetly look into that one. You have a GREAT day now! sst1226

11-23-2008, 07:21 AM	#8 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,600 OS: win 7 32x 64x rtm	Re: power supply fan always on some power supplies are programed to keep runing until the system tempreture drops then close down a 350w psu is light on for recent computers __________________

11-23-2008, 08:40 AM	#9 (permalink)
sst1226 Registered User Join Date: Aug 2006 Location: Pa Posts: 59 OS: windows xp	Re: power supply fan always on I wasn't aware of that. It never did that before, and I never got the "DISK FAILURE" error before either. So I am inclined to believe there is a problem elsewhere, as stated in my earlier posts. Thanks for the info! sst1226

11-23-2008, 08:56 AM	#10 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,600 OS: win 7 32x 64x rtm	Re: power supply fan always on are you using an 80 wire ide cable on the drives __________________

11-23-2008, 10:04 AM	#11 (permalink)
sst1226 Registered User Join Date: Aug 2006 Location: Pa Posts: 59 OS: windows xp	Re: power supply fan always on no 40 wire