Go Back   Tech Support Forum > Hardware Support > RAM and Power Supply Support

User Tag List

power supply turns on and off - when computer is off

This is a discussion on power supply turns on and off - when computer is off within the RAM and Power Supply Support forums, part of the Tech Support Forum category. My current rig is a complete custom-built machine with dual power supplies. It's ran for about 2 years without a


Closed Thread
 
Thread Tools Search this Thread
Old 01-16-2009, 12:06 PM   #1
Guest
 
Join Date: Jan 2009
Posts: 2
OS:



My current rig is a complete custom-built machine with dual power supplies. It's ran for about 2 years without a hitch. I haven't made any BIOS, CMOS, hardware, or other configuration changes in quite some time.

Two nights ago the lower PSU started turning itself on and off about once every 3 seconds - only while the computer is off. When it's on everything works fine. The hardware that is connected to the PSU doesn't seem to try to turn on with the PSU while it's doing its cycling. I can just hear a small 'click' inside, and the PSU fan and all starts, then dies off a few seconds later, then it repeats.

I turned off the main switch on the lower PSU and it doesn't do the cycle anymore, but I can still hear the small 'click' inside the case at regular intervals. I have to turn off the upper PSU to get it to stop completely. I have to keep both main PSU switches off now when the computer is off.

So, before I scrap these PSUs I wanted to ask if anyone else has seen this happen and if the PSUs are definitely the problem. Any help would be appreciated. Thanks!

Magestyx
magestyx is offline  
Sponsored Links
Advertisement
 
Old 01-16-2009, 07:51 PM   #2
TSF Enthusiast
 
linderman's Avatar
 
Join Date: May 2005
Posts: 25,116
OS: win 2000 pro / Win XP pro

My System

Send a message via MSN to linderman

why do you have two power supplies ??????????
linderman is offline  
Old 01-17-2009, 12:02 PM   #3
Registered Member
 
Join Date: Dec 2007
Posts: 81
OS: XP Pro SP3



Are the PSUs redundant where the outputs are paralleled? Or each powering separate hardware? If they are powering separate hardware, how is the power enable (usually a green wire) wired?
Frank4d is offline  
Sponsored Links
Advertisement
 
Old 01-18-2009, 03:26 PM   #4
Guest
 
Join Date: Jan 2009
Posts: 2
OS:



I have two power supplies because I have a lot of hardware in the machine. The case is big, so it makes plugging everything in much easier having one in the top and one in the bottom.

The power supplies are not redundant-- one powers a lot of primary elements like the mobo and system drive, and the other powers all the extra hard drives and things like that. I'm not sure about the power enable- do you mean the wire connecting the extra PSU, or are you referring to the wire that connects the mobo to the power button on the case?

It just seems strange since the machine hasn't been moved or anything recently-- I wouldn't think a wire came loose. The power button works fine to turn everything on.

Magestyx
magestyx is offline  
Old 01-18-2009, 04:31 PM   #5
TSF Enthusiast
 
linderman's Avatar
 
Join Date: May 2005
Posts: 25,116
OS: win 2000 pro / Win XP pro

My System

Send a message via MSN to linderman

what are the makes and models of these units ?
linderman is offline  
Closed Thread

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is on
Smilies are on
[IMG] code is on
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Post a Question


» Site Navigation
 > FAQ
  > 10.0.0.2
Powered by vBadvanced CMPS v3.2.3


All times are GMT -7. The time now is 01:10 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright 2001 - 2018, Tech Support Forum

Windows 10 - Windows 7 - Windows XP - Windows Vista - Trojan Removal - Spyware Removal - Virus Removal - Networking - Security - Top Web Hosts