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June 10th, 2018 06:00
Optiplex 990 PSU Change
Hello,
I had a Dell Optiplex 990 With The OEM PSU, 12 GB DDR3 Memory, and a 250 GB HDD... I was experiencing issues with the device booting yesterday... I found out one of my Memory sticks was the culprit, while trying to find out what happened I had to Power-Cycle the PC maybe 20 times, After everything was said and done, I replaced the memory and Plugged it in and.... I SAW SMOKE then following the smoke I saw a fire starting... MY HDD WAS ON FIRE And I rushed and unplugged it and blowed air on it like 20 times before It came out. I then went and tryed a New PSU to see if the PSU Was the cause and I just have 1 Amber Light blinking on the Power button, it is just as if it is in sleep mode, I can hold down the power button and it will stop blinking, when I turn it on, Nothing still blinks, no fans spin up or anything... This is the new PSU : EVGA - 80 PLUS 600W ATX 12V/EPS 12V Power Supply - Black (CERTIFIED REFURBISHED) I purchased it from Newegg (https://www.newegg.ca/Product/Product.aspx?Item=N82E16817438070&_ga=2.73334099.1998650918.1528568349-455718142.1526841772) Can anyone find out if its certified? Or even the cause of the fire?
All Answers appreciated
speedstep
11 Legend
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47K Posts
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June 10th, 2018 06:00
Over voltage has damaged more than just the hard drive.
When you get to fire it means that everything is fried.
Probably a counterfeit unit because causing a fire like that would void any UL safety rating.
Its supposed to shut off and stay off with over voltage and over current. This is true for ANY UL certified power supply.
UL does testing including but not limited to over voltage input aka 450V AC as well as VERY HIGH Temperature etc.
Basically you have Fried Ram, Fried CPU, Fried motherboard, Fried Hard drive.
Its Dead Jim.
https://www.youtube.com/watch?v=3at_Ev2kOoI
Amobi
1 Message
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February 7th, 2022 12:00
I have a refurbished Dell OptiPlex 990, The Power switch is blinking amber.
Anyone has a suggestion as to the way forward.
bradthetechnut
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February 7th, 2022 13:00
Likely the PSU.
First, with PC off, push PSU test button. Do you get a green light? Then all peripherals are good and PSU is bad. Otherwise, if no green light, unplug all external and internal peripherals one by one until you do get a green light.
When doing anything inside the PC, be sure it's unplugged. Power button can be used to drain any residual power.
If the size 2032 CMOS battery is 5+ years old, it won't hurt to try replacing it first.