F5F Stay Refreshed Hardware Desktop One day with two power supply failures

One day with two power supply failures

One day with two power supply failures

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julien190901
Member
192
11-02-2016, 02:42 PM
#1
I am assembling two high-performance PCs. One is fully working with a 750W cooler and master PSU. The other is brand new, featuring a 650W Corsair PSU, and I transferred some components from the working PC to its case and motherboard. When I powered both up, they failed completely—both stopped working and failed the basic connection test. I heard a faint soft click, and when checking other pins with a multimeter (while the paper clip was bridging pins 4 and 5), I saw no voltage. One PSU is nearly three years old, while the new Corsair unit seems to be dead. It’s strange both failed at the same time. I didn’t do anything unusual or disrupt the PC while it was connected. All connections were perfect and correct. What could have caused this?
J
julien190901
11-02-2016, 02:42 PM #1

I am assembling two high-performance PCs. One is fully working with a 750W cooler and master PSU. The other is brand new, featuring a 650W Corsair PSU, and I transferred some components from the working PC to its case and motherboard. When I powered both up, they failed completely—both stopped working and failed the basic connection test. I heard a faint soft click, and when checking other pins with a multimeter (while the paper clip was bridging pins 4 and 5), I saw no voltage. One PSU is nearly three years old, while the new Corsair unit seems to be dead. It’s strange both failed at the same time. I didn’t do anything unusual or disrupt the PC while it was connected. All connections were perfect and correct. What could have caused this?

V
viktorlegend
Junior Member
35
11-02-2016, 03:26 PM
#2
Commonly encountered, yet some need very little load to begin testing. Updated June 14, 2022 by An0maly_76 Added more details
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viktorlegend
11-02-2016, 03:26 PM #2

Commonly encountered, yet some need very little load to begin testing. Updated June 14, 2022 by An0maly_76 Added more details

W
whymedudeman
Member
140
11-06-2016, 03:07 PM
#3
No, I didn't reuse any PSU cables.
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whymedudeman
11-06-2016, 03:07 PM #3

No, I didn't reuse any PSU cables.

D
Dralock
Member
81
11-09-2016, 07:17 AM
#4
BBZ brings up a relevant observation. Have you checked performance at the PSU pins if it's modular?
D
Dralock
11-09-2016, 07:17 AM #4

BBZ brings up a relevant observation. Have you checked performance at the PSU pins if it's modular?