Cool GTX
Dang, Sorry for your Loss. Its Never fun to have an equipment failure
It would take a lot of investigating to see if a conclusion could be reached - regarding the Root Cause of the failure
1) Was it a power surge ?
2) Was it a short on the MB or device installed on the MB ?
3) Was it the PSU itself ?
If the 24-pin cable is Not damaged & you have the "test start Cap" - then you could test the PSU --> Outside of the PC
These questions will come up so I will ask:
Was the PC plugged into a power strip & was it a surge suppression type or did you use a UPS ?
Were Only the factory supplied cables used to connect the PC ?
No power surges, also plugged into a surge protector.
The motherboard specifically, as shown in the picture.
Factory cables that came with the PSU only.
I do have the test PSU clip that I was going to test, but ran out of time last night.
I'll try that when I get home...but the 24 pin cable reeks of burnt electronics.
the_Scarlet_one
It’s very strange that this would happen without there being a cause. I would suggest sending the 24pin cable back with the power supply so it can be tested as well.
Since you said z390, I would assume most of the components are relatively new.
How was the motherboard set up? Was it in a case, and could anything, to possibly include an insect, have gotten in behind the motherboard?
Could the problem have started at another component, and cascaded back to the 24 pin? Usually the power supply would go into over current protection shutting everything down, and then problems typically start as the power supply is attempting to boot. While I don’t see motherboards having issues like this as often, graphics cards have been known to do something like that when a component is failing.
Could you provide more pictures of the motherboard and area that were damaged, as well as the back of the motherboard? It won’t help much here, but I am just very curious and like to look. I would suggest contacting Asrock about the motherboard, and talk to them about getting a replacement. Don’t immediately say, “yeah, the power supply killed it” because they aren’t going to help, but if they will look at the board, they may find a different cause that we can not see.
That's exactly what I intend to do, send in the main PSU unit along with the 24 pin cable.
The components are as new as late november/early December, the board/cpu, ram and gpu some months back along with the PSU itself some months back.
Motherboard in a case, no insects, and I thoroughly inspected all components.
Unfortunately, I already packed up the board and sent it back and having it replaced and once I get that, I will use a different PSU and see if my other components are OK or not.
Though as I said, I thoroughly inspected everything and the picture I provided is the only part that visibly shows damage.
CraptacularOne
Looking at your picture it looks like the 12v rail overloaded.
What Cool GTX suggested is worth a try too. You can either use the power cap tester that should have come with the PSU or a paper clip and short the green wire to any of the black wires. Then try just plugging in a fan and see if it works.
Here is a pinout of a 24pin ATX connector. The arrow is pointing to where the green wire is, you can short that to any of the black wires with a paper clip and test the PSU yourself by simply switching the power button on and off on the PSU itself.
While briefly after the smoke and sparks show, and almost immediately, the fans that were hooked up were still spinning before I yanked the power. I didn't try turning it back on after that though, so I'm not sure, and ran out of time to test the PSU by itself of which I'll try tonight.
Thanks everyone.