Question about NEC CPU Heatsink with Fan CPU Heatsink & Fan

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Loose heatsink on dell dimension 1100

The retaining clip on my heatsink has broken, and now my heatsink is loose and the PC will not turn on, has anyone got a remedy for this as i cannot find a replacement part from dell, unless i replace the whole thing

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  • jhaynes668 May 11, 2010

    What kind of pc is it. Because I know there is alot of problems with the dimension 2350s heat sink retainers. And I have fixed one recently. plus I have the model number for the actual peace. All together it is about a 15 dollar fix

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I'd seize the opportunity to get a new cheap cooler, as it can also extend the life of the PC.

If not you're in for either some DIY soldering or asking Dell for another clip.

Posted on Apr 28, 2009

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1 Answer

Alert! Chipset Heatsink not detected. System halted! is the alert that comes up when I turn my computer. What can I do?


Hi scotteg71121...

The alert is caused by a loose chipset heat sink.
Dell has a self test that prevents further damage by halting the system and displaying the message Alert! Chipset heat sink not detected. System Halted.
The solder joint seems to fail from constant tension and heat.
If you find the missing clip inside the computer you can solder it back in place and reattach the chipset heat sink wire hook.
If you can't find the clip you can replace it by bending a thin piece of wire in a half circle.
You can see a picture of where the clip goes on your computer motherboard by following the link below.
Please take time to rate me
http://www.aplusperfect.com/articles/chipset-heatsink-not-detected

Sep 05, 2011 | Dell Dimension 4600C PC Desktop

1 Answer

I'm getting this error message "chipset heatsink not detected system halted" What does that mean, and is there a fix for it?


it means that the chipset heatsink on the motherboard has come loose. There is a sensing circuit that is closed by the spring clip that holds the heat sink in place. One of the loops on it has broken, causing the error.
Resolution is motherboard replacement
http://shop.ebay.com/i.html?_from=R40&_trksid=m570.l1313&_nkw=dimension+4600c+motherboard&_sacat=See-All-Categories
installation information:
http://support.dell.com/support/edocs/systems/dim4600c/sm/parts.htm#1102134

Aug 08, 2011 | Dell Dimension 4600C PC Desktop

1 Answer

I have a dell dimension 2400. My starts up fine


Most likely a motherboard issue.

Also ensure the CPU Heatsink is firmly attached. If the heatsink is loose, replace the plastic heatsink retainer

If it is secure, then the motherboard is the most likely failure point

http://www.fixya.com/support/r4282412-find_no_post_diagnostic_information_dell

May 19, 2010 | Dell Dimension 2400 PC Desktop

1 Answer

Dell dimension


The 1st thing I'd do on that model, is check and make sure the heatsink under the green shroud is firmly attached (The retainer has been known to break) If it is loose, replace the heatsink retainer.
If it is secure, then I'd run diagnostics, 1st on the HDD CNTL+ALT+D and if that passes, run diags from the Dell Dimension resource CD
You can also check these diag LED indications for more clues to problems
http://www.fixya.com/support/r4282412-find_no_post_diagnostic_information_dell

Apr 11, 2010 | Dell Dimension 2400 PC Desktop

1 Answer

Dell 4700 desktop, will not boot up. Light remains


A solid Amber power LED is an indication of a motherboard problem. Remove any external connections and see if LED indications change. If no change, remove all PCI expansion cards, try again. If still no go, disconnect all drives, try again. If still no change, ensure the CPU heatsink is firmly attached (If loose you need to replace the retention module) If nothing loose and no changes from other steps, replace motherboard

Mar 11, 2010 | Dell Dimension 4600C PC Desktop

1 Answer

Dell Dimension 2400 with steady amber power light and diagnostic lights of ABC green and D off. What could be the problem?


Steady amber power LED is indicative of a problem with the motherboard. Remove all external connections except power, remove all PCI Cards, ram, disconnect power from all drives, turn on see if power LED is still steady amber. If it is, more than likely the motherboard has a failure. Also check to see if the CPU heatsink is firmly seated (The plastic retainer has been known to fail causing the CPU to overheat)

Oct 04, 2009 | Dell Dimension 2400 PC Desktop

2 Answers

Turns off after 1-2 mins like it got unpluged dell dimension 2350plus the clip to the heat exchange on top of the cpu broke


it's probably the cpu overheating because of the broken clip. You'll need to buy a new heatsink for the cpu (get some thermal paste at the same time). Take the old one off, clean the compound off the top of the cpu. Put a pea-size blob of thermal paste on the cpu and attach the new heatsink.

Sep 23, 2009 | Dell Dimension 2350 PC Desktop

2 Answers

Alert chipset heat sink not detected system halted error message


It is NOT the CPU fan! There is a heatsink over the northbridge chipset adjacent to the CPU. The clip that supplies pressure to maintain contact between the northbridge and the heatsink has detached on one or both ends. There are wire loops at each end of the clip which feed into the motherboard. When the clip detaches (solder failure), it pops the loop out of the motherboard. The BIOS recognizes this condition as a heatsink failure, hence the error message.

Jul 10, 2009 | Dell Dimension 4600C PC Desktop

9 Answers

Alert chipset heat sink not detected system halted error message


This is a relatively common problem in the Dimension 4600c. The small, fan-less heatsink for the Northbridge chip (a memory/video-to-cpu communications chip) is held down by a spring, which is anchored by two small wire loops soldered to the motherboard at locations marked "HS2". The spring completes an electrical circuit between the two wire loops. The spring puts a substantial force on the minscule bit of solder holding the loops to the motherboard, and was a poor design.

If a loop breaks off, the circuit is broken, which tells the BIOS that the heatsink fell off. To fix this, you need to 1) secure the heatsink to the chip, and 2) reconnect the circuit between the two "HS2" locations on the motherboard. I have sucessfully used this solution. This solution will not necessarly stand up to a lot of abuse if the Dimension's enclosure is frequently opened and closed to replace other components such as RAM and hard disks.

0) unplug the computer.

1a) Recover the heatsink, spring, and loose wire loop. Discard the spring. Get:
- a fresh tube of thermal paste from Radio Shack or other electronics supply store,
- some epoxy,
- a round toothpick,
- about six inches of insulated 14 to 20 gauge solid copper wire,
- electrical solder, flux, and a soldering iron,
- and a box of cotton swabs.

1b) Using pure alcohol and lots of cotton swabs, clean *all* of the existing thermal paste off of the Northbridge chip and the bottom of the heatsink. When both are dry, apply a dab of paste to the center of the Northbridge chip. Use a round toothpick like a kitchen roller to spread the paste evenly across the small raised center square of the chip.

1c) Apply small daps of mixed epoxy just outside of the four corners of the raised center of the Northbridge chip. Place the heatsink onto the Northbridge chip, centering and squaring it as best you can. Press firmly to make good contact with the thermal paste. Allow epoxy to dry.

2a) Firmly seat one or both detached wire loops into their mounting holes at the "HS2" locations. While pressing down on the loop, apply a small dab of epoxy to one end of the loop to secure it to the motherboard. Allow epoxy to dry.

2b) Strip the ends of the copper wire, and bend the wire so that it can reach around (rather than over) the heatsink to the two wire loops. Solder the ends of the wire to each loop. Knowing how to solder is an exercise left to the reader. "Use head main ting": don't drip solder onto the motherboard.

You can now plug in the computer and restart. The BIOS and/or OS may have saved the error state and return a different message about the heatsink issue. You may need to reboot a couple of times to allow the BIOS to notice that the "HS2" circuit is (hopefully) now complete. When you've sucessfully booted the machine, shut it down and gently close the Dimension's enclosure.

May 21, 2008 | Dell Dimension 4600C PC Desktop

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