Dell Optiplex 390 Blue Led Power 1 and 3 Amber Led
MoBo is dead if I recall the amber light correctly
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It could be the power supply or the motherboard.
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could be your power supply. I'd try swapping it out with a known good one to test.
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An amber light on Dell PC's normally means that the power supply has failed. I would replace this PC from a known working unit to test.
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I thought powersupply first but he said the fan is running so maybe the 20/24 pin connector on the power supply is not working properly. I have had this happen before on the optiplex dell's and it has always been mobo. But you should check the PS first just in case. It will save you money.
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Heres a great site for reference. It covers just about ever Dell machine out there.
ftp:/
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Most likely motherboard but could be the power supply.Worst case, both. You can rule out the power supply by taking it out and placing it in a spare machine and see if it boots up.
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See this link - ftp:/
when the computer does not start
indicates a problem with the
system board or power supply.
Blinking amber light indicates a
problem with the system board
Amber light — Solid amber light
when the computer does not start
indicates a problem with the
system board or power supply.
Blinking amber light indicates a
problem with the system board
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Time to contact Dell support for warranty purpose.
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It could also mean it's time to switch to HP.
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Brand Representative for Dell
Dear Afrifadba,
Thank you for your question.
I concur with many on this post that this is a failed power supply. Would you be able to confirm by swapping in a known good power supply?
I have sent you a direct message with my contact information. I'll be happy to hear from you.
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Brand Representative for Dell
Dear Afrifadba and Community:
I thought I would add a little more value here:
The below steps can help resolve an issue where the Optiplex 390 will NO POST after being powered for an extended period of time. The symptom is the machine will power off soon after the power button is pressed with a momentary Power and Diagnostics LED illuminated on front panel.
1. Unplug the power cable from the power supply, drain out the power by long-pressing the power button, and reconnect again once it is done.
2. Unplug either front USB or front Audio jack connector from the motherboard; the system should POST with connector removed. When the system does POST, hit F2 to enter the system setup menu, then find the 'Deep Sleep' setting, and set to Disable. Shutdown and re-insert the USB / Audio front connector, and the issue should be cleared.
Once system POST successfully, download and install BIOS 0390-A05.exe from Support.Dell.com for a permanent solution. Here's the BIOS link:
http:/
Although the above is most likely unrelated to Afrifadba's issue, I thought this might be worth looking into.
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Hello. I am having the SAME problem (solid amber light) on my Optiplex 320. However the front USB, audio, and power button are all connected via one cord to the motherboard. Any other ideas?
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I have an optiplex 390 which has an amber light on mother board but the power light blinks amber for a second then nothing any suggestions on how to solve this
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Hi, we had a same power supply problem with solid amber, then we changed the SMPS now it's working. Thanks to all for your valuable information and suggestions.
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I had a user who could not power with a solid amber light. Unplugged the power supply and drained the power by pressing power button for 20 seconds. The user then plugged in and powered on while holding down f2. Success!
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Source: https://community.spiceworks.com/topic/400465-dell-optiplex-390-power-light-shows-amber
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