Question about Dell Optiplex GX280 (99301) Motherboard

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Dell Optiplex GX280 - On power ON , no Fan movement no display

I have Dell Optiplex GX280 system, initially, when turned it on only heatsink fan runs faster and no display then I Have to adjut different cables and heat sink then on next boot it starts properly, last night iturnd off the system properly and in the morning when try to turn on the system it dosn't started then i cheked the power supply by shorting the PS on and GND pins of the connector and it is working fine (Power supply fan is working fine and also tested the CD ROM it was also working) the light on the mother board also lits but no display no movement in the Fans of power supply and heat sink. Now I need help how to correct this prob - thx

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My Dell Optiplex GX280 has been in storage for 6 months and now wont even boot!!! All I get are sone tones and the heat sink fan running

Posted on Mar 20, 2010

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Confirm no leaking or bulging capacitors on your mothboard.
refer to here
http://en.wikipedia.org/wiki/Capacitor_plague

As this was a common problem with the GX280.
If found, you will need to replace the capacitors.

The other check is to make sure the heatsink is fitted correctly, perhaps reaply the thermal paste if you have any. I know that high temps would switch the GX280 off.

Posted on Jul 15, 2009

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2 Answers

Dose not boost and fan is high speed


The Thermal Paste in-between the Processor, and finned Heatsink that sits on it; has dried up.

THOROUGHLY clean top of Processor, and bottom of Heatsink.
PROPERLY apply fresh, new Thermal Paste.

FOLLOW Anti-Static Procedures.

(Not 'shouting', emphasizing)

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3071621&CatId=503

http://www.hardwaresecrets.com/article/274

ftp://ftp.dell.com/Manuals/all-products/esuprt_desktop/esuprt_optiplex_desktop/optiplex-gx280_user%27s%20guide_en-us.pdf


Click on the style of Optiplex GX280 that you have. In the list click on Processor.

FOLLOW Anti-Static Procedures.

Yes, I listed that twice.

Regards,
joecoolvette

Mar 25, 2013 | Dell OptiPlex GX280 PC Desktop

1 Answer

Hello, I've got a Dell Optiplex GX280 series desktop pc which has refused to boot up. Instead it shows an error saying "Alert! chipset heat sink not detected system halted! Would appreciate your...


Both your CPU and chipset have heatsinks to dissipate the heat they generate.
Over times, the heatsink compound between these components and the heatsinks
may dry up and no longer conducts heat efficiently. Your system on power up,
detects excessive heat from the chipset and if allowed to continue on, will burn
itself up. To protect it, your system shuts itself down.
Open up your case and inspect the chipset. Make sure the fan (if any) is running.
If it is, you may have to remove the heatsink (normally clipped on to the chipset)
and remove the old compound and apply a fresh new layer of heatsink grease.
While you are at it, also replace the heatsink compound of your CPU.

Jul 11, 2011 | Dell Optiplex GX280 (99301) Motherboard

2 Answers

I have dell optiplex GX280 System in unbranded casing, Kindly suggestion about Processor Fan Voice, he is so shouting


The fan(which runs on a bearing) has aged, it must be replaced. Luckily this is an easy and cheap fix. Pick one
http://bit.ly/9qzXBz

May 30, 2010 | Dell Optiplex GX280 (99301) Motherboard

3 Answers

Optiplex GX280 - loud fan at start up and amber power light - does not boot and no light at the back


Apply pressure on the heat sink fan right before you press the power button and continue applying pressure. Watch your screen if you see it boot this means its a problem with your processor clamp that applies pressure to the processor. Try to remove the top part of the clamp. Shouldn't be too hard with some needle nose pliers. Then just replace the heat sink and fan with out that clamp.  

May 27, 2010 | Dell OptiPlex GX280 PC Desktop

3 Answers

No Display in dell optiplex gx280 & Fan speed is veyy high


GM from pakistan fsd problem in motherboard chepset......you should repare u r gx 280 or heat the chepset with heat gun ........ 

Aug 16, 2009 | Dell OptiPlex GX280 PC Desktop

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Checkpoint [ithr]


the problem description is
Ithr
Smm mode is initializing the thermal probes.

problably the system is running at high temperature because of improper fan speed, so try to clear the nvram if its not working flash the bios if still the issue persists, replace the heatsink assembly and the motherbord.

Apr 02, 2009 | Dell OptiPlex GX280 PC Desktop

2 Answers

In my Dell Optiplex GX280, the processor fan was not start properly its run moderate speed for continuously but within 10 mins the pc shutdown automatically, after turn on the error show thermal heat...


Sounds like improper contact with the cpu and heatsink. If the fan runs...it runs and it'll do it's job but if the contact isn't proper, it'll overheat. These are older machines and the thermal paste that Dell uses turns to power after hundreds of power cycles. Buy some cheap silicon based thermal paste, clean off the cpu and heatsink with some 90% ir greater iso alcohol and apply a small rice grain sized drop of paste on the cpu. When you install the heatsink, give it a couple of twisted to spread the paste out.

Should be good to go.

Mar 13, 2009 | Dell Optiplex GX280 (99301) Motherboard

2 Answers

Dell GX280 High Speed Fan and No Display.


i had same problem today and i tested my machine and solved the problem at last.
the problem is the thermal value that your mainboard sets for your cpu.
please replace the mb.
ps: before this process,i tried almost everything . cpu fan , memory , cpu , cables ,case ... everything. but the problem is on your mb.

Feb 04, 2009 | Dell OptiPlex GX280 PC Desktop

2 Answers

Problem withe dell gx280 fan and display


Unfortunately this seems so be a motherboard problem, Dell's solution is to replace the motherboard I'm not sure there's much you can do at home or work to fix this - if it's still under warranty get dell to replace the motherboard if not im afraid its the bin for it sorry

Feb 02, 2009 | Dell OptiPlex GX280 PC Desktop

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