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Optiplex gx280 won't boot and cpu fan goes faster

DELL optiplex gx280 won't boot and cpu fan goes faster and faster. The light on front panel stays orange, won't go green, and the cpu fan starts off slowly and increases speed until it is quite audible.

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Sounds like a bad motherboard, I try resetting the bios , removing everything but the video , could be a bad power supply too (if you have one jump the wires in there as a test). you can buy those dell MBs cheap on fleabay.
Eric

Posted on Jul 31, 2009

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Del 320 optiplex orange lite blinks won't boot up



For the Optiplex 320, a flashing amber light with no sound indication can mean 3 things.


1) Your power supply has failed

2) Your motherboard failed, most likely from a bad capacitor.

3) The front panel board (where the power button is located) is faulty or not connected properly.


I've worked with 10's of 1000's of Dell Optiplex's over the past 8 years and the flashing amber light is well known as a tell-tail sign of one of those three failure. Always start your trouble shoot with a PSU tester, then inspect the motherboard for domed or split/leaking capacitors...then on to the front panel which would require another panel and ribbon from the same model.

Jan 25, 2014 | Dell Optiplex GX280 (99301) Motherboard

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Gx280 powers up but no boot cpu fan runs out of control


I had the same thing happen on my Dell. I found the processor was bad,

Jan 18, 2013 | Dell OptiPlex GX280 PC Desktop

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We have around 30 units of DELL Optiplex GX280 having mother board failure. It was more then 3 years old already. Once the turbo fan become noisy then it will gone dead.


May be serious. See if the power light goes amber after power up. I had (have - still siting in my basement) one that did same. Power up, fans sound like 747 taking off. Power light goes and stays amber. This is USUALLY caused by bad capacitors on the mother board. Known GX280 problem going back. If you look on the motherboard, the capacitors should have flat tops and not leaking. If the are rounded or leaking, the MB has probably gone bad.

I obviously can not be 100% sure about this as the unit is not here.

You can google "gx280 solid amber light loud fan" and see the issues. Here is one such link.

http://en.community.dell.com/support-forums/desktop/f/3514/p/19253544/19414291.aspx

Feb 16, 2011 | Dell OptiPlex 330 Desktop Desktop Computer...

1 Answer

I had a dell optiplex gx280. When the machine is turned on the cpu fan turn on and gets progressively faster and faster. Much faster and louder than it should to the extent that it is extremely alarming....


sounds like a PSU problem check all electrical connections that attach to your hard drive including IDE,SATA leads or simply replace them all and new PSU i would personally recomend you get a heavy duty PSU with plenty of wattage from problems that i have had you can bid and win on Ebay $30 PSU as i did
hope this helps

Jul 28, 2010 | Dell Optiplex GX280 (99301) Motherboard

2 Answers

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


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.

Jul 15, 2009 | Dell Optiplex GX280 (99301) Motherboard

1 Answer

Fan makes a lound noise and power button is orange


It sounds as if your power supply is cooked because the cooling fan has been running slow

Only way you can check is to take a panel off and hook a voltmeter into the 12v & 5V supplies on the Hard Drive and the Floppy Drive.

Jun 25, 2009 | Dell OptiPlex GX280 PC Desktop

8 Answers

Dell Optiplex gx280 shuts down and orange power light blinks


It happens because the power supply is overheats and computer goes to standby. The power supply is 160w or lower. Specially it will happen if you put more devices in such as video card or sound card. So the only solution you have is to place a small 1or2 fans toward the power supply to make it cooler. And 1 more thing the power for the fans should come from other sources.

Sep 30, 2008 | Dell OptiPlex GX280 PC Desktop

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