Equipment:
- Dell Optiplex GX520 (Small Form Factor)
- Original Dell Power Supply Model H220P-01 Dell P/N: YD358 (CN-0YD358-47890-64S-4075)
- Replacement Power Supply Model H275P-00 Dell P/N: TD570 (CN-0YD080-17972-616-0GES)
- ADDA Model AD0712MS-D70 cooling fan (original)
- StarTech.com 70mm Ball Bearing (Replacment) Fan part FAN7X15TX3
OR
Masscool FD07015S1M34 Case fan – 70 mm
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| Dell Optiplex GX520 |
If your Optiplex GX520 is just shutting off at random times but will reboot and start up fine after it has sat for a minute, then it is highly likely that you have a bad fan on the Optiplex’s power supply. We have about 25 of this model and systematically they ALL are developing this same problem and I figured it out that the fan on the power supply is going out. What happens is that the power supply overheats after a while and the power supply has some circuit to watch for overheating and it shuts off the computer. But when you let it cool off you can reboot it and it will come right up. You can either buy a new power supply or replace the fan in the existing one. I’ve replaced 4 or 5 of the fans and haven’t found one that didn’t work just fine after I replaced the fan.
Here are all my other Dell Computer Repair Postings:
- Computer Randomly Shuts Off Power Supply Issues on a Dell Optiplex GX520 (Small Form Factor)
- How to Replace the Power Supply Fan in a Dell Optiplex GX520
- Dell Optiplex 320 Will Not Boot or Go to Bios
- How to Replace the Memory in a Dell Latitude D830
- Dell Optiplex GX520 Randomly Shuts Off (this post)
- How to Replace the Power Supply in a Dell Optiplex GX520
- How to Fix a Striped Display on a Dell Optiplex 320
- How to Troubleshoot Dell Optiplex GX520 Power Supply Issues
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