Question about Dell OptiPlex GX270 PC Desktop

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Dell gx270 power switch

This dell will power up for a millisecond. U can hear the fans start, but then they turn off instantly. When u hit the power button, a green light comes on momentarily, but then goes off immediately. I think I need a new power button bcz u cannot hear it click. Any suggestions?

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  • antonio77997 Nov 22, 2008

    Thanks, I'll try disconnecting everything. I had the power supply tested and it works fine. The problem I feel is the motherboard. I'll try ur suggestions and let u know. Thanks.

  • FedUpwithDel Dec 21, 2008

    I now have the same problem, only after having pressured Dell into replacing the motherboard in March 2008, which I learned was standard practice through January 2008 as zillions of these GX270's suffered from leaky capacitors which caused the first meltdown. (Thermal Event)
    Having spent the time to replace the motherboard with a refurbished one which took weeks to procure from Dell, its disgraceful that a second motherboard bit the dust after 8 mos.
    My advice... Dont waste your time! Replace the machine. While I have 10 different Dell machines in service with no problem, I have more HP/Compaq machines which have provided reliable service for much longer.... Though both companies are tough to deal with for the rare service/support problems that I've attempted to resolve that way. Most problems I resolve in house, but in cases like these you have no alternative but to contact them.
    Both are like big airlines... Too big and disconnected. I like the big names, and what choices do we have, so I think the 270 will get an HP replacement.

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I TURN MY DELL OPTIPLEX GX280, MONITOR AND PRINTER OFF BY TURNING THE POWER BAR THEY ARE PLUGGED INTO OFF. WHEN I TURN THE POWER BAR THEY ARE PLUGGED INTO BACK ON THE COMPUTER STARTS MOMENTARILY THEN GOES BACK OFF. CAN I MAKE ANY ADJUSTMENT TO CAUSE IT TO STAY ON WHEN POWER IS RESTORED AFTER TURNING THE POWER BAR ON?

Posted on Jan 30, 2010

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I don't think you need a new switch. The power "switch" on the front of computers today is a momentary action push button switch. Not a locking or clicking switch as older computers used to have.

Many of today's computers, including the gx270 / gx280 computers from Dell are really always on. You can see the green or yellow LEDs on the motherboards glow when they are "off" (like a sleep mode).

They are in a "sleep" mode until you push the power switch, which sends a momentary signal off to the motherboard to fully power up and turn itself "on".

I think you have something else happening here. When the system tries to power itself up, and detects a severe problem, it will try to automatically turn itself off.

The problem could be a bad motherboard, power supply, memory or processor. It could even be a failed hard disk that is drawing too much power (shorting out) from the supply.

If you had done something to the system, like move it or open it up for an upgrade, etc.. Look again at all the internal connections, and make sure there is nothing rattling around inside that might also be causing a short.

You could try removing all the PCI cards in the system, removing the power and data cable connections from all the disks (Floppy, Hard Disk, CD/DVD) and see if the bare motherboard (with CPU and memory) will boot by it self. If it does boot, then the problem was somewhere in those items and you can replace them one at a time until you find the problem, or if it all works again then it may have been a loose or bad connection.

If you have another machine available, you could try switching the power supplies and seeing if that is the problem.

Good luck!

-Chip

Posted on Nov 22, 2008

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I've had the same problem with another computer..
The simple solution, instead of buying and installing a new internal fan is to place the computer on its side and put a small electric clip-on fan directly over the vent. Turn on the clip-on fan and then start the computer; the clip-on fan should generate more than enough cooling so that the computer doesn't overhead.

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You can use a larger fan, but a larger fan will generate too much wind. You want to use an electric clip-on fan and not a battery operated fan because a battery operated fan won't generate enough wind/cooling.

And, if the problem ends up being more than simply a cooling problem, you can at least use the clip-on fan later.

Let me know if this works.

XMinusOne@gmail.com

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