Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > Weird PSU Problem
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Buhatma   11-06-2003 at 09:19:01 PM

Hi,
The PSU in my wifes case is a Allied True 450 watt. The problem that I'm getting is that when I connect a 80mm case fan the system wont power up, but as soon as i disconnect the 80mm fan it starts. I then can reconnect the 80mm fan and every thing works fine. The PSU rails read as follows. 2.56,3.29,5.10,12.73, and all that is in the system is 1 HD, 1 CD-RW, Athlon 1600+ cheap ECS mobo, processor fan and 1 80mm case fan. WHat can be causeing this problem. Is the PSU on the way out the door. Again I must say this problem only happens at start up with the 80mm fan pluged in. Thanks in advance for an help.

Forgot to mention that there is also a Radeon 9600 Pro installed.

2.8C @ 3.5 w/ slk-800u and smart fan 2, Abit IC7-G, 2 x 256mb Geil Platinum pc4000, Radeon 9700 Pro 375/335, 2 x WD Raptor in Raid 0<P ID="edit"><FONT SIZE=-1><EM>Edited by Buhatma on 11/06/03 03:34 PM.</EM></FONT></P>

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twofruitz   11-07-2003 at 12:56:11 PM
- 0 +

it happened to me with a cathode tube. dont put it in a fan only (black) molex. put it in a regular white one. if you've already done that you might have a bios setting wrong or a faulty molex cable set. it could also be a problem with the fan. if its an LED it might be taking the power limit over what it should be but since your system is only a 1600 its probably not that.

<A HREF="http://service.futuremark.com/compare?2k1=6973142" target="_new">3dmark2001</A>

2.4C @ 3.0G
Asus P4C800
Corsair 2x512 3200
Sapphire 9600pro @ 500/700
80G Seagate S-ATA150

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Buhatma   11-08-2003 at 05:25:38 AM
- 0 +

Hi,
After running some more test's it seams that I have a bad PSU. For some reason the PSU dosn't have enough voltage to start the computer. Easy fix, I returned it for a new PSU. Thanks for the info.

2.8C @ 3.5 w/ slk-800u and smart fan 2, Abit IC7-G, 2 x 256mb Geil Platinum pc4000, Radeon 9700 Pro 375/335, 2 x WD Raptor in Raid 0

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