Re: Corsair CX500 ATX PSU|Works under some/no load, but not in motherboard
I haven't tried it in another motherboard, unfortunately. I cannibalized the only other one I have at the moment. Also, the previous owner said it was faulty, so I assume it didn't work in their motherboard either. I'll put this on the todo list though. Just in case.
The PSU is not modular. That being said, I'll check the cables anyway. I think I'll just have to try to test each component on the board(to a certain point) and pray. Also, disable the supervisor like you said.
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Re: Corsair CX500 ATX PSU|Works under some/no load, but not in motherboard
Thanks for the link. I went ahead and tested the main filter capacitor which tested good. Then tested every capacitor on the output side, and all of them were good(<0.5 ESR).
It's rated for 3A. Best I could do was to load the 5VSB with ~3 Ohms(2 Ohm resistor + crocodile clips), it continued to run fine.
Starting to think the issue is just a bad supervisor IC, though I have no idea what the probability of that is. What are the chances...
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Re: Corsair CX500 ATX PSU|Works under some/no load, but not in motherboard
The supervisor ic is an ST9S429-PG14. Didn't know that even the bulk filter cap could mess things up once it's running. Once I find a suitable load, I'll test each of the rails again, especially the 5VSB then test each cap like you said.
Thanks for the suggestion.
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Corsair CX500 ATX PSU|Works under some/no load, but not in motherboard
Hello.
I'm trying to fix a Corsair CX500 ATX Power supply. It works fine with no load or with a couple of devices connected but turns on for only 0.5s in the motherboard. I've tested the motherboard with a different, lower wattage rating PSU and it works fine, so I know that isn't the issue.
3 Different ways I've tested it:
1. Switch on with no load: [COLOR="SeaGreen"][B]All voltages good except -12v (-10.8)[/B][/COLOR]
2. Switch on with CD drive and HDD connected: [COLOR="seagreen"][B]All voltages good, peripherals working[/B][/COLOR]...
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