Did my new PSU kill my graphics card?

[Muskelmads]

So, I just received my new XFX 750W PSU ( http://www.hardwaresecrets.com/artic...ly-Review/1182 ) to replace my old Antec Trio 440W power supply, which have served me faithfully for several years.

I swapped the PSUs, connected everything and powered up on my main computer. There's HD activity, so I'm pretty sure that Win 7 is loading, but theres no signal to the monitor. I made sure that everything was installed correctly, but I still could not get any signal. I even tried with two other monitors, but no luck.

Frustrated I took my graphics card (An Asus GTX 560 Ti) and inserted it in my backup computer. Now this computer is loading Windows (HD activity) but theres no signal on the monitor. If I reinstall the old graphics card (a GTX 260), my backup computers works fine again, leading me to believe that my GTX 560 ti was killed by the XFX PSU.

My main computer works fine again with the old Antec PSU and my old backup 9800GT.

Also, I inspected the 6pin molex connectors and noticed that one of them smell a bit burned. Dunno if I am imagining this, though hehe. Also, some of the cables have white dots on the connector as if someone have been troubleshooting the power supply (The connector that smell weird also have a white dot). I've been working on this the entire day, so my brain is slowly shutting down, but I have started suspecting that this XFX PSU have been RMA'd at some point.

Also:
1) Everything was and still is running at stock frequencies.
2) The GTX 560 Ti was idling in mid-30s, and under load it would reach high 70's.
3) The motherboard is an old Lenovo OEM POS, and the processor is a E8400.
4) There's two diodes on the back of the Asus GTX 560Ti that indicates that the card is getting proper power, even when I connected the odd 6-pin molex connector.

What do you guys think?

 

[C1]

Sure, that new PSU could have an intermittent or transient that simply exhibits from time-to-time. When it was returned, it was checked and found to be within operational specifications. No one has the time or resources to spend diagnosing intermittents. The solution has long since been to replace the component (now usually a whole circuit card or even the whole device).

 

[Muskelmads]

Sure, that new PSU could have an intermittent or transient that simply exhibits from time-to-time. When it was returned, it was checked and found to be within operational specifications. No one has the time or resources to spend diagnosing intermittents. The solution has long since been to replace the component (now usually a whole circuit card or even the whole device).

Thanks for the reply.

Yeah, I was afraid that something like what you described was the case for my PSU. Sucks though, should be illegal to sell stuff like this, especially when they are a bit pricey as this PSU is.

I wonder how they react when I claim that the PSU also killed my graphics card, which I bought from a different store.