Replaced north bridge heat sink. Now no power up. Eh? - 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 07-04-2011, 11:22 PM   #1 (permalink)
Wizard Techie
 
Join Date: Sep 2005
Location: /home/jason
Posts: 3,056
Send a message via AIM to Jayce
Default Replaced north bridge heat sink. Now no power up. Eh?

Working on an Optiplex GX280 here. It's an older Pentium 4 box. I replaced the north bridge heat sink because the old one was overheating. I was reluctant to do this because my mentality suggested, if it was fine all this time, why now? The caps look good, however there are 2 caps near the processor with SLIGHT upward cones, however no leakage. I've certainly seen worse caps that work fine, but I still took notice to this.

I put the heat sink on, fire it up, oh wait! Nothing. I take ram out. nothing. Removed everything like hard drives, pci cards, etc. Nothing. If I plug in a PSU tester, it fires right up though, which suggests to me everything is okay.

Think the mobo is fried? The user told me it kept shutting off on him after running for a while. I turned it on and every 20 seconds I physically touched the north bridge heat sink. Sure enough, it got hotter, and hotter, and hotter. It never turned off on me because I shut it off manually since I realized it was the issue. It worked on friday. I replace the north bridge heat sink today, and no dice. I did however notice that there's a case sensor on this to see if the case has been opened or not. I read the instructions to reset this and sure enough, no dice either...

Just trying to get some second opinions here. Think the board is toast?
__________________

__________________
There's no place like /home.
Jayce is offline  
Old 07-04-2011, 11:32 PM   #2 (permalink)
Super Techie
 
Thomas's Avatar
 
Join Date: Jun 2011
Location: NY USA
Posts: 384
Default Re: Replaced north bridge heat sink. Now no power up. Eh?

Chances are due to age and heat a small solder joint separated under the slight flexing of you changing the heat sink. I would suggest stripping down the board and do the oven method. Should get you some more use out of that system if you don't plan on replacing it.
__________________

__________________
Pentium D 935 @ 4.0ghz
AsRock g31
Kingston HyperX T1, 4gb
Radeon HD 5670 @ 860mhz gddr5
Antec High Current Gamer 520
InWin Br665 matx
CyberPower Green CP1500 900W UPS
Acer 20" G205hl
Camera Canon PowerShot SX10is
Quote:
Originally Posted by KSoD View Post
1) Be Respectful Treat other members as you would have them treat you. This means no flaming, insulting, or belittling other members.
Thomas is offline  
Old 07-04-2011, 11:43 PM   #3 (permalink)
Lord Techie
 
S0ULphIRE's Avatar
 
Join Date: Mar 2007
Location: Australia
Posts: 8,665
Send a message via MSN to S0ULphIRE
Default Re: Replaced north bridge heat sink. Now no power up. Eh?

Sounds like it was dying well before you got it. I wouldn't be surprised if the board was dead at all, certainly sounds like that's the case. No beeps with no memory in especially is usually a good giveaway.
__________________
"As a result of all this hardship, dirt, thirst, and wombats, you would expect Australians to be a sour lot. Instead, they are genial, jolly, cheerful, and always willing to share a kind word with a stranger, unless they are an American." -- Douglas Adams
S0ULphIRE is offline  
Old 07-05-2011, 12:12 AM   #4 (permalink)
Wizard Techie
 
Join Date: Sep 2005
Location: /home/jason
Posts: 3,056
Send a message via AIM to Jayce
Default Re: Replaced north bridge heat sink. Now no power up. Eh?

Quote:
Originally Posted by S0ULphIRE View Post
Sounds like it was dying well before you got it. I wouldn't be surprised if the board was dead at all, certainly sounds like that's the case. No beeps with no memory in especially is usually a good giveaway.
That's what I thought too. I guess I was just a little "what the??" when I realized it worked on Friday and today it does not. Anyway, I'm going to see if I have a compatible board in my stash, as I DO have a similar Dell system in my stash that I gutted for other parts. The mobo itself might work. We'll find out...
__________________
There's no place like /home.
Jayce 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
South Bridge and North Bridge Thermal Paste insaniak New Systems | Building and Buying 7 02-25-2010 08:05 AM
What is a North Bridge? aetherh4cker New Systems | Building and Buying 5 01-08-2007 03:57 PM
how to remove the north bridge chip heat sink ztdep Overclocking and Modding 3 07-01-2006 07:14 PM
North Bridge bigredx24x New Systems | Building and Buying 4 01-11-2006 03:43 PM
North/South Bridge ag3 Monitors, Printers and Peripherals 6 08-04-2004 01:42 AM



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 04:58 PM.


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