Just to get the credit where it's due, most Corsair PSU's (including the TX650) are infact made by Seasonic.

Not that i'm knocking Corsair, i've bought enough of their memory over the years, both are mightily solid brands.

Edited by deleted (Fri 18-Mar-11 22:54:59)

In reply to a post by nredwood:

..... Since I've gone through about 6 PSU's in this PC.....

There were a few boards of about this vintage that exhibited strange behaviours including PSU strains and related BSOD's etc. Memory is something of a stranger these days but something tells me that they may well have been Gigabyte boards.
The problem was eventually found to be within the PCB manufacturing process whereby the boards were wrongly cut and exposed PCB tracks were unwittingly brought out to the edge of the board at the backplane end.
The cure was simple - Remove the board, stick a narrow strip of insulation tape across the back of the board so that the edge was no longer exposed to the case or addin cards metalwork.

If it isn't that, watch out for the board mounts as I've often seen a metal standoff and screw where plastic or even nothing at all should have been used. Sometimes, insulating washers are left off and even a slightly bent case chassis can cause problems.
Often, these "short hazards" won't be noticeable until the temparature rises enough to cause expansion and bang!

Finally got around to getting the PC going again

Very happy with the PSU and all seems to be working well with the new CPU, heatsink and hard drive

Thank you to all for the advice

PSU replaced and all working fine along with the new CPU and heatsink

Thanks for al the help and advice