Optiplex 740. Fan runs full bore. - Techist - Tech Forum

Go Back   Techist - Tech Forum > Computer Hardware > Hardware Repairs and Troubleshooting
Click Here to Login
Closed Thread
 
Thread Tools Display Modes
 
Old 10-07-2008, 10:01 AM   #1 (permalink)
Wizard Techie
 
Join Date: Sep 2005
Location: /home/jason
Posts: 3,056
Send a message via AIM to Jayce
Default Optiplex 740. Fan runs full bore.

I had a problem with this system last week. The fan had a good chunk of dust in it, so I blasted it out. Then I get a call today (a week later) saying that it's happening again. The fan just runs full bore while the system itself never seems to turn on.

Dell 740 Optiplex.

edit - oh wow, I just got it up and running. jdklafjsdl;kfas

2nd time now. Why would this keep happening?
__________________

Jayce is offline  
Old 10-07-2008, 02:01 PM   #2 (permalink)
Call me Mak or K
Mod Emeritus
 
KSoD's Avatar
 
Join Date: Sep 2004
Location: C:\
Posts: 35,647
Default Re: Optiplex 740. Fan runs full bore.

Sounds like the controller for the fan might be bad. Maybe a replacement is in order. Could be that the fan was caked with dust for so long that the ontroller thinks it needs to run full bore to keep the system cool.
__________________

__________________
I do not accept support questions via EMail, PM, IM or my G+ page!

Phone: LG Optimus G Pro
Running: Stock JB from LG with Nova Launcher

KSoD is offline  
Old 10-07-2008, 02:22 PM   #3 (permalink)
Wizard Techie
 
Join Date: Sep 2005
Location: /home/jason
Posts: 3,056
Send a message via AIM to Jayce
Default Re: Optiplex 740. Fan runs full bore.

That's what I thought too, but I used an entire can of air just blasting this computer, and it wasn't even all that bad. It's a relatively new computer, but I think it's JUST out of reach of warranty.

I ended up whipping up an HP desktop for that user, so I can take my time troubleshooting this particular Optiplex... along with the other 30 desktops sitting around I gotta figure out.
Jayce is offline  
Old 12-17-2008, 05:52 PM   #4 (permalink)
Newb Techie
 
Join Date: Dec 2008
Posts: 1
Default Re: Optiplex 740. Fan runs full bore.

We have had this on a previous Optiplex; turn it on and nothing but the fan runs and it runs loud. Other times turn it on and it boots. Eventually it never boots again.
In our case it turned out to be the processor was not making good contact with the socket after a period of time. And it began to happen on all the PCs of that model. The simple crude diagnostic was if it was booting bump the case of the PC slightly does it cause the non booting issue.
Dell replaced several motherboards and processors for us. We took the rest out of service because they were in a mission critical location.
gary0 is offline  
Old 12-17-2008, 11:27 PM   #5 (permalink)
Lord Techie
 
Join Date: Feb 2005
Location: asdf
Posts: 8,887
Default Re: Optiplex 740. Fan runs full bore.

At our vocational school we had the issue on some of the dimension series... Fan would run at full speed, for no reason, turns out the mobo in the few random machines had gone bad.
c0rr0sive is offline  
Closed Thread

Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Repairing/Reconditioning a case/PSU fan CalcProgrammer1 Hardware Repairs and Troubleshooting 2 05-28-2009 11:34 AM
New Pc, cable management /cpu temp / fan cooling advice encity5 Overclocking and Modding 12 01-22-2009 06:34 AM
Dell Optiplex GX280 Fan Issue jairic Hardware Repairs and Troubleshooting 1 06-30-2008 10:04 PM
Lower Video Card noise by reducing the fan speed Osiris Monitors, Printers and Peripherals 0 01-01-2008 12:53 PM



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 10:32 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.