system died, psu still ok

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skypuppy

Commendable
Jun 24, 2016
18
0
1,510
This is a first for me. Corsair 600 PSU, Asus Turbo V EVO motherboard. Worked fine for several years.
Tried to turn the system on one day and it acted like it was getting no power.
1. Tried different outlet.
2. Tried different power cable..
3. Disconnected hard drives.
4. Finally removed power supply and tested it by itself and it is fine.
So now, I'm puzzled where to go next to get this system back up.
Any ideas, folks?
Thanks,
Skypuppy
 
Solution
photonboy
I agree, should get another PSU.

It's basically down to part-swapping.

1. PSU
2. Motherboard
etc

It's probably one of those two since apparently there's no lights on the motherboard.

Just about any working, compatible PSU can be used. You don't need very much power to confirm power-on. Even a 100W PSU would work so if you can buy or borrow a PSU for fairly cheap that's one option.

Testing the fan spins on the PSU only tells you PART of it works as mentioned in the post above. It's not a pointless test because if the fan does NOT spin it's hosed, but if it DOES spin then it doesn't really help you because it can still fail under load.
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InvalidError

InvalidError

Titan
Moderator
May 18, 2007
23,815
5,265
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Try a different power supply. Unless you have programmable electronic load testers and an oscilloscope to measure your PSU's power regulation performance or do oscilloscope measurements while the PC is under load, turning on the PSU on its own tells you absolutely nothing about how clean the power the PSU is providing actually is. Excessively dirty power or power out of specs will cause your PC to fail to power up while still spinning fans when tested "on its own."
 
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photonboy

photonboy

Titan
Jun 20, 2006
21,567
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85,015
I agree, should get another PSU.

It's basically down to part-swapping.

1. PSU
2. Motherboard
etc

It's probably one of those two since apparently there's no lights on the motherboard.

Just about any working, compatible PSU can be used. You don't need very much power to confirm power-on. Even a 100W PSU would work so if you can buy or borrow a PSU for fairly cheap that's one option.

Testing the fan spins on the PSU only tells you PART of it works as mentioned in the post above. It's not a pointless test because if the fan does NOT spin it's hosed, but if it DOES spin then it doesn't really help you because it can still fail under load.
 
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Solution
InvalidError

InvalidError

Titan
Moderator
May 18, 2007
23,815
5,265
108,890

Right, all it tells you is that the PSU might not be completely dead.

What it doesn't tell you is that you have 6Vdc + 18V peaks on the 5VSB rail because the 5VSB caps are dead, similar story for the other rails.
 
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