Question about Dell OptiPlex GX280 PC Desktop

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Repair psu for gx280

Im electronic engineer and we got have problem with this psu,otherwise we dont have problem with the other psu.Actually when you put ON the power psu it run for a few seconds and stops.Already have checked all the diods and the rectifiers and they are ok. pls help us

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  • Bob613 May 20, 2008

    Locks up after XP splash, then cooling fan goes turbo! System locks up. Swapped HD (SATA) - same result. Running 512 mb ram on 2 256mb dimms. Tried pulling one - system stops responding before splash, but fan doesn't go turbo. Is is motherboard or CPU? Can I test these?



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I have had several issues with this same problem, you may need a new power supply, because your old one may be failing and may need replacement.

My solution to this problem is that you may need to buy a need psu. I recommend either calling dell or buy a new psu.

Posted on Nov 12, 2007


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I want to upgrade my power supply for the dell gx280 small desktop

Sorry to say that a 260w PSU is the largest PSU you will get for this system as that is all the M/B is safely rated to any higher than that and it may cause a fire or worse. I run a Dell GX270 and this is maxed out on a 260w PSU. This system will only be upgradeable to these specs :

3.2Ghz CPU ( Note they must match existing letters on CPU.
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Even the tower model of these systems only have a 260w PSU max due to limited power rating for the M/B. Tower PSU is able to be swapped out just like any other tower but the fact remains that the M/B is only rated to 260w and if you use a larger PSU it may cause a fire or worse. I hope this helps.

Sep 05, 2012 | Dell OptiPlex GX280 PC Desktop

1 Answer

I am looking for a schematic for a Dell Optiplex GX280 power supply. The supply is model HP-U2106F3.

I just replaced my GX280 power supply (mini-tower) with the following 400W for $30.

The only place I can think you will find an actual schematic for the PSU is from the manufacturer.

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seems pretty much like you need to replace the fan on your PSU. :)

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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

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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

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usually any PSU will fit as long as you dont have a odd case. you can even take out ur old PSU take it to a best buy, circut city, and fry's electronics and ask them for n higher watt of the PSU u already have.

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Hp media centre m1180n wont power up after power cut

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plug in a video card in a pci slot and see if your video comes on and do the same with your agp slot

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