Reason for fried PSU?

[dirk101]

Last week I put together a system with a Corsair TX750W PSU. After I finished assembling it, I plugged it in, and when I switched on the PSU a low ominous pop came from inside of it, I know because I was right next to the back of the PSU. I figured something must have gone wrong, but even so when I pressed the power switch on the computer it turned on fine.

After 2 days during which I installed the operating system and any programs I needed, I tried to turn the PC on one morning, it booted up, but then it kept cycling through the first 5 seconds of POST. After resetting the system, nothing booted up anymore but the fans inside were still running. I powered the system off, and when I tried to power it back on it didn't work. After this I turned the PSU off, plugged the PSU into a different socket, and when I turned the PSU on it fried, there was a very lowd pop accompanied by a spark that came out of the power supply and my house's circuit breaker tripped.

What I'm wondering is if it could have been anything other than a manufacturing defect. For one thing, the CPU connector has 4+4 pins, I only needed the main 4, but I couldn't bend the remaining cable for the other 4 pins in any way without feeling safe about it, and I could only leave the connector touching a condenser. I fee like I'm asking a stupid question, but was this a bad thing to do?

As a side note, I've already tested the remaining components in the system with another PSU and they work.

 

[hunter315]

Probably just part of the random failure rate, send corsair an email and setup and RMA, shouldnt have any issue getting a replacement.

 

[dirk101]

Thanks for the reply. The replacement isn't an issue, I've already resolved it and the PSU is currently on its way to be delivered. I was merely wondering if it could have fried out of my fault, so that I don't do it again a second time.

 

[hunter315]

Its pretty hard to fry a PSU, i dont think what you did was the cause of it. To have tripped your houses circuit breaker implies a failure on the AC side of the PSU, not the DC side that powers your components. Its pretty hard to cause a failure on the AC side of the unit with the wiring that runs to the components, i doubt it was your fault.

 

[dirk101]

That's good to know, your help is much appreciated.

 

[dirk101]

Best answer selected by dirk101.