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Why did my HX650 die?

post #1 of 13
Thread Starter 
Hi there.

As you might have read from my previous thread, my HX650 died, I've since ordered a Antec HCP 850W to replace it (obviously going to RMA to Corsair, though).

I just wondered, as I don't want to kill another PSU, if it was me that somehow killed it!

Specs are in my sig, and I ran the PSU to fill the loop, and it was fine, then I let it run the pump for about half an hour, and again, it was fine.

As soon as I plugged it into my PC, it booted to to desktop, I was happy. Then, I saw one of my 92mm exhaust fans stop spinning, followed by a very strong smell of electrical burning. I yanked out the power lead, and traced the smell to my (now dead) HX650.

I left it for about 20 minutes, for the smell to go, unplugged everything from the PSU so it was on it's own, jumped the 24 Pin by using the paperclip in the black and green wires (which is the same method I used to power the pump when I was leak testing and filling my loop). This caused the main breaker in my house to trip, shutting everything off. After that, the paperclip test does nothing. My RMA has been accepted by Corsair, but still, I'd like to get to the bottom of it.

Now, I noticed that the fan that stopped spinning was slightly unbalanced, but I shrugged it off. I believe this is somehow related, all of my other fans were working fine, but this one just stuttered and stopped.

Now, why did the fan stop, and did this cause the death of my power supply? Taking out of the equation any water that could have leaked into the PSU, as my loop is watertight and, being in a TJ07, not really that easy to get water into the PSU.

For my exhaust fans, one of which stuttered and stopped, followed by the smell of burning from the PSU, are two of these. I have four of these on my RX480.

I used this to connect them all to the bottom fan header on my motherboard, obviously as well as my pump header.

Now, I think it has something to do with that, could that amount of fan load from one header cause the PSU to fail? Should I have used a Molex > Fan Adapter to connect to the source header that powers the rest?

Any ideas, or suggestions, more than welcome, as I don't want to repeat myself if it was my fault.

Thanks!
Edited by SmokinWaffle - 3/27/11 at 12:13pm
    
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post #2 of 13
Those are low powered low noise fans, togehter they come in under 0.5 amp, I'm suspecting your mobo is spec'd for 2 amp on a header, although even if its 1 amp per header your still fine and your PSU shouldn't even notice. Where is the pump connected?
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post #3 of 13
Thread Starter 
Yeah, I read that Gigabyte has a 1A limit on their headers, but the AP-15's are something silly like 0.042A per fan, so it wouldn't even come close.

The pump was connected via Molex that came directly from the PSU, and it was the only thing connected to the Molex chain. The header on the pump used for monitoring speed was attached to the splitter that the rest were attached to, as I said.
Edited by SmokinWaffle - 3/27/11 at 12:34pm
    
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post #4 of 13
i would say, stuff goes wroung. end of.
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post #5 of 13
Thread Starter 
Quote:
Originally Posted by driftingforlife View Post
i would say, stuff goes wroung. end of.
That's true, but it just seems odd that it powered by build for 8 months on air, was fine filling my loop and running the pump, as soon as I plug it into my PC, a fan stutters to a halt and I smell burning, followed by the PSU dying.

Perhaps it was just a massive coincidence?
    
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post #6 of 13
Quote:
Originally Posted by SmokinWaffle View Post
That's true, but it just seems odd that it powered by build for 8 months on air, was fine filling my loop and running the pump, as soon as I plug it into my PC, a fan stutters to a halt and I smell burning, followed by the PSU dying.

Perhaps it was just a massive coincidence?
I'd imagine your system stressed it a bit, it should have protection against any hardware connected to it failing though and shut off rather than smoke up and die.
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post #7 of 13
Thread Starter 
Quote:
Originally Posted by Darren9 View Post
I'd imagine your system stressed it a bit, it should have protection against any hardware connected to it failing though and shut off rather than smoke up and die.
The PSU, or the pump?

Surely the pump would have gave in, not the PSU? It pumps water around very fast, so I'm assuming there is no issue with the actual pump flow rate itself (when I was filling it, I almost had the bottle of distilled vertical because it was pumping it so fast, ).

So, you are saying that the pump pushed the PSU over the edge of it's limitations? As you said, it shouldn't just die. Although, remember, it didn't outright die then, a fan stopped and I smelt burning, so I unplugged it. I then jumped the 24 Pin, breaker tripped, then it's dead.

I could have kept it running, but with a fan stopping and a burning smell, it was a pretty easy decision not to.
    
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post #8 of 13
Quote:
Originally Posted by SmokinWaffle View Post
The PSU, or the pump?

Surely the pump would have gave in, not the PSU? It pumps water around very fast, so I'm assuming there is no issue with the actual pump flow rate itself (when I was filling it, I almost had the bottle of distilled vertical because it was pumping it so fast, ).

So, you are saying that the pump pushed the PSU over the edge of it's limitations? As you said, it shouldn't just die. Although, remember, it didn't outright die then, a fan stopped and I smelt burning, so I unplugged it. I then jumped the 24 Pin, breaker tripped, then it's dead.

I could have kept it running, but with a fan stopping and a burning smell, it was a pretty easy decision not to.
The pump wouldn't of pushed it over, without the CPU and GPU actually stressing there'd be nothing like enough load. If you ran the pump for the leak test then that's not the problem and a fan giving up shouldn't be a problem either, I've shorted my PSU before and it just turns off. If it's all wired correctly then it prolly just gave up.
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post #9 of 13
Thread Starter 
Quote:
Originally Posted by Darren9 View Post
The pump wouldn't of pushed it over, without the CPU and GPU actually stressing there'd be nothing like enough load. If you ran the pump for the leak test then that's not the problem and a fan giving up shouldn't be a problem either, I've shorted my PSU before and it just turns off. If it's all wired correctly then it prolly just gave up.
Yeah, that's what I thought. It booted to desktop fine, then smelt.

It was all wired fine, I only had my SSD plugged in, my 5970, the 4+4 Pin, 24 pin, and molex for the pump. Perhaps it was just it's time to go.

Although, does switching to a Molex > 3 pin adapter sound like a good idea just as a safeguard to run the one 3 pin > 9 from?
    
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post #10 of 13
Quote:
Originally Posted by SmokinWaffle View Post
Yeah, that's what I thought. It booted to desktop fine, then smelt.

It was all wired fine, I only had my SSD plugged in, my 5970, the 4+4 Pin, 24 pin, and molex for the pump. Perhaps it was just it's time to go.

Although, does switching to a Molex > 3 pin adapter sound like a good idea just as a safeguard to run the one 3 pin > 9 from?
Your not even close to the header limit so it shouldn't matter, I'd prolly have them on a molex for the first power on though.
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