Solved

auxiliary fan not spiinning

Posted on 2012-03-31
6
464 Views
Last Modified: 2012-04-04
Hi.
just recently replaced power supply in my pc which has an auxiliary fan and now fan is not running.  I might be connecting power cables incorrectly but wanted to know aside from the connection to power supply, am i also supposed to connect fan to auxiliary fan1 3pin connection on motherboard?
0
Comment
Question by:dankyle67
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 48

Expert Comment

by:dbrunton
ID: 37792004
I presume this auxiliary fan is meant to blow air either in or out of the case.

These types of fans usually are connected to motherboard if there is a connection point on it.  They don't have to be.  They can be connected to the Molex connectors on the power supply - these are the connectors to the floppy and hard disk drives.  You'll need the proper adaptor, this depends on the pins on your fan connector.

See http://www.amazon.com/Ultimate-3Pinto4PinAdapter-3-Pin-4-Pin-Adapter/dp/B000BSJGL0 for example.
0
 
LVL 3

Accepted Solution

by:
BobRalph earned 175 total points
ID: 37792010
No, don't connect the fan twice. Just either connect it to the 3 pin on the motherboard, or to the 4 pin (molex) connector on the power supply cable but don't connect both at the same time. Sometimes those 4 pin connectors on power supplies don't fit together very well, so try reconnecting or trying a different plug. If that doesn't work then just use the 3 pin connector on the motherboard and it should work fine.
0
 

Author Comment

by:dankyle67
ID: 37792100
If I tried both the 4pin molex and 3pin motherboard
and still doesn't spin should I try the auxfan2
Connection instead on motherboard? How can I
Test if fan is broken? If I don't use fan will pc overheat?
0
U.S. Department of Agriculture and Acronis Access

With the new era of mobile computing, smartphones and tablets, wireless communications and cloud services, the USDA sought to take advantage of a mobilized workforce and the blurring lines between personal and corporate computing resources.

 
LVL 3

Expert Comment

by:BobRalph
ID: 37792124
Yeah go ahead and try the auxfan2 and see if that will work. The fan may be dead or there may be a short in the wire. Was the fan working before you replaced the power supply? The only way to test it is to just try different power connections, and maybe turn the blades with your hand a little while the computer is powered on to see if something is causing it to jam.

You shouldn't have a problem with heat as long as you make sure the CPU fan is connected and working properly. That being said, you can take the fan to Best Buy or any computer electronics store and they will help you get a new one for pretty cheap. More airflow is always better in computers.
0
 
LVL 48

Assisted Solution

by:dbrunton
dbrunton earned 175 total points
ID: 37792163
Agree with BobRalph on most of his comments but be cautious of turning fanblades while they are connected to power.  If they decide to spin up you'll know about if if they catch a finger in the blade.

But I'd go with getting another one.  They are standard components.
0
 
LVL 92

Assisted Solution

by:nobus
nobus earned 150 total points
ID: 37792512
you test if a fan is broken by connecting it to a working 12V connector - molex or other
you can test the connector with a known good fan
or let a PC shop test the fan...

>>  If I don't use fan will pc overheat?  <<   that depends - not all pc's overheat without an aux fan, in fact many do not have one; but to be sure, monitor the temperatures with speedfan - it will warn you :  http://www.almico.com/speedfan.php

also - if the fan was connected to the motherboard  -swapping the power supply did not change anything to the fan - unless you knocked it loose
but - since you replaced the Power Supply -  you must realise that it may caused problems on the motherboard also

Does the system still boot ok?
if not, use the minimum setup as described in this guide  :   http://www.experts-exchange.com/Hardware/Components/Motherboards/A_1945.html                  (Short-overview-of-how-to-troubleshoot-bad-hardware-when-a-pc-does-not-post)

if the disk shows problems - use this guide :
http://www.experts-exchange.com/Storage/Hard_Drives/A_3000-The-bad-hard-disk-problem.html
0

Featured Post

Ransomware-A Revenue Bonanza for Service Providers

Ransomware – malware that gets on your customers’ computers, encrypts their data, and extorts a hefty ransom for the decryption keys – is a surging new threat.  The purpose of this eBook is to educate the reader about ransomware attacks.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Monitor input from a computer is usually nothing special.  In this instance it prevented anyone from using the computer.  This was a preconfiguration that didn't work.
Stuck in voice control mode on your Amazon Firestick?  Here is how to turn it off!!!
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…

749 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question