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Why won't my Corsair CX430 PSU power my system but a different one will? - Page 2

post #11 of 27
Quote:
Originally Posted by klaxian View Post
If it was shorting out, why would the OCZ PSU work fine? I have now seen the same behavior with two different CX430s as well. Are you saying it's just a bad design by Corsair and all their units short out on this motherboard?
How long have you had the psu? Seems like it is knackered to me. Send it back and get a new one.
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post #12 of 27
Thread Starter 
Quote:
Originally Posted by Chuggerboom View Post
How long have you had the psu? Seems like it is knackered to me. Send it back and get a new one.
I just bought it for this system. I thought it was broken too so I obtained a replacement. I have now reproduced the same behavior with two different CX430 PSUs so I can probably rule out a hardware defect.
post #13 of 27
This seems to be an issue with the CX430 V2 (maybe other CWT DSA too?). It's probably some timing incompatibility with the motherboard and power supply. Some motherboards are more picky than others, so certain combinations of motherboard and power supplies just don't work.

It may have to do with the power good signal specifically.

See discussion here:
http://www.jonnyguru.com/forums/showthread.php?t=8399
post #14 of 27
Thread Starter 
Quote:
Originally Posted by TikTiki View Post
I would guess that you are building an HTPC/Home theater box...
Good guess, but it will actually be just a web browsing machine for a colleague to use at work. The only GPU is the on-board APU.

Quote:
Originally Posted by TikTiki View Post
If you have a digital PSU tester, plug it in and check the latency.
That's a good idea, but I don't have a PSU tester. Maybe Corsair can shed some light on this.

Quote:
Originally Posted by TikTiki View Post
If you have a working PSU handy and it fits physically in your box, why not use it.
The working OCZ PSU came out of a server system that I have. I swapped it in temporarily just to test if the PSU was indeed the problem. However, the server needs that PSU to function.
post #15 of 27
Quote:
Originally Posted by klaxian View Post
I just bought it for this system. I thought it was broken too so I obtained a replacement. I have now reproduced the same behavior with two different CX430 PSUs so I can probably rule out a hardware defect.
Send it back and get something else. You did say the OCZ was ok didn't you?
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post #16 of 27
Thread Starter 
Thank you mikeaj!

If the CX430 does indeed have such a design flaw, I will have to exchange it for a different PSU. Is there any way to ensure that different PSU wouldn't have this issue with my motherboard?
post #17 of 27
Thread Starter 
Quote:
Originally Posted by Chuggerboom View Post
Send it back and get something else. You did say the OCZ was ok didn't you?
Seems like that's what I will have to do. The OCZ worked fine, but it is also a much more expensive unit - definitely overkill for this build. I'm sure I can find something else though. How will I know that the next PSU won't have this incompatibility with my motherboard or do I just have to guess and hope for the best?
post #18 of 27
Quote:
Originally Posted by klaxian View Post
Seems like that's what I will have to do. The OCZ worked fine, but it is also a much more expensive unit - definitely overkill for this build. I'm sure I can find something else though. How will I know that the next PSU won't have this incompatibility with my motherboard or do I just have to guess and hope for the best?
Antec High Current Gamer 400W.

http://www.newegg.com/Product/Produc...82E16817371046
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post #19 of 27
I can't imagine why these PSU are giving you trouble. i would return it, if you can, and just get a cheep unit. I use a 270 watt TFX no name brand PSU to power my A8 processor, you shouldn't have any trouble with any PSU.
post #20 of 27
Quote:
Originally Posted by klaxian View Post
Seems like that's what I will have to do. The OCZ worked fine, but it is also a much more expensive unit - definitely overkill for this build. I'm sure I can find something else though. How will I know that the next PSU won't have this incompatibility with my motherboard or do I just have to guess and hope for the best?
Get the Rosewill green series 430w.


Quote:
Originally Posted by mothergoose729 View Post
I can't imagine why these PSU are giving you trouble. i would return it, if you can, and just get a cheep unit. I use a 270 watt TFX no name brand PSU to power my A8 processor, you shouldn't have any trouble with any PSU.
It's because the CX430 has a flaw where it will shut off if you are pulling in a "weird" load from it. Corsair should have just stuck with Seasonic for the CX400. It was better then the CX430
Edited by nbmjhk6 - 10/15/11 at 2:24pm
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