Help! AX1500i Problems (and minor explosion)

A few years ago I built a gaming PC based around:

For the past 6 months I have had intermittent problems during boot-up, with the PC failing to complete even the early stages of the BIOS process before switching itself off. After many weekends checking every MB slot and cable connection, swapping out cables such as the main 24 pin ATX, and testing various components on a separate test rig, I believe the problem must be down to the MB or PSU.

The AX1500i’s self test either lights green after pressing the ‘test’ button or sometimes fails to light at all. Perhaps more interestingly, it fails test using two different types of PSU tester (ThermalTake Dr Power II and a unit branded YBLNTEK which looks much like a Lindy unit from Amazon) for its ‘Power Good’ signal timing, which consistently exceeds 500Ms, but the PSU self-test LED shows green during power-up?

Unfortunately, I am disabled (due to a spine injury) and worsening mobility and manual dexterity now means that PC building and testing takes me 10-15 times longer than before my accident (I am not exaggerating) and my Wife is most unhappy that the kitchen table has been my ‘work bench’ for many weeks with seemingly little progress.

In the interim, I have been using my slightly older Water-cooled PC which has a similar spec MB, CPU, memory, etc, but uses a pair of water-cooled Asus AMD Radeon HD7990-6GD5. However, the Corsair AX1500i fitted to this PC ‘exploded’ last week 5 minutes after switch-on! There is no evidence of any coolant leakage (I also have Koolance leakage detection units fitted) or external MB/component shorting, just a very loud bang and lots of smoke venting from the PSU and a blown 13Amp fuse on the surge protected Belkin distribution socket..

I have not started investigating this problem fully yet as this PC is housed in a very large Supermicro SC801 case and is far too heavy to move downstairs (from my study) and working ‘on the floor’ is both painful and slow (I am also expecting the worse and suspect a new MB, CPU, Memory, etc. will be needed unless the PSU was able to contain its fault?

Any comments on the significance of a 'late' POWER GOOD signal with respect to a fairly modern MB, i.e. is an extra few hundred milli-seconds really a problem or is this a throw-back to earlier server demands?, or ideas would be most welcome............

Regards,

Martin

Sorry i Can't help with your Problem buddy.. but i can advise you to open a support ticket and get that ball rolling.. anything the guys here help with as far as diagnostics go can be added to the ticket at any time......

Good luck man!!

If the socket fuse blew up, i would feel like it's the primary side of the power supply that had a failure, otherwise, secondary safeties would have kicked in and shut down affected rails.

It probably is what caused instabilities to start with. The transfer from one PC to the other may have finished it off. Even as bad as it looked, i have good hopes your components may be intact ^^'

So yep.. hit that support ticket!