Hi. Yesterday I recently built a brand new computer, and about 1 second after I turned on the computer, there were loud popping sounds and a fairly large amount of smoke followed by the smell of burnt electronics. I immediately shut it down, and in case anyone asks, I was unable to locate where the smoke was coming from due to surprise. I don't want to turn on the computer again, to avoid damaging the parts/damaging the parts even more. I live in Japan, so could the American made motherboard and Japanese power supply have possibly clashed?
Dont think the nationality of the parts would matter. Does the PSU have active PFC? (you can often tell by seeing if there is a small switch, not the power switch, on the back. Should say something along the lines of 120-240v). If it doesnt have Active PFC and was set wrong, that could have killed your PSU as it was expecting different amount of voltage from the wall.
Or you could have been plain unlucky and just received a dud unit. If you have another PSU that is known to be good, try replacing it and see if that works.
Also to minimize possible shorting (which could have been the issue), bread-board the machine when you do it. So the motherboard is on a non-conductive surface (a wooden table, the mobo box, rubber mats are all good surfaces) and everything is assembled outside the case.
I suppose a visual inspection of the components would also help. If there are any burn marks on the back of the mobo, graphics card PCB or anything like that, that will probably help you figure out what went wrong. If there's nothing, then its likely the PSU internals.
I do not see any burn marks on the motherboard or components, so hopefully it was just the power supply that died. Do you think that there might be a reasonable chance that the psu took another component with it, such as the motherboard?