Gigabyte has a tendency to "upgrade" their motherboards/graphic cards with cheaper components in the shape of "revisions", so depending on the revision you get you can get an awfully poor product that does not resemble the original product reviewed.
don't get me wrong, they make a lot of "Great" stuff, and on the whole they're the only motherboard maker other then ASUS i'd ever suggest someone buy a motherboard for an AMD cpu, but they do a lot of shaddy things to cut costs and make a few dollars more. Your caps could have popped due to a bad power supply, a manufacturing error, or because gigabyte was cheap and bought bad caps.
unfortunately there is no way to tell. so i suggest you replace the power supply as well when you replace the motherboard. MY standard operating procedure when a gpu/cpu/motherboard dies is to replace the power supply. you just don't know if it died due to a poor PSU or died due to age/abuse/shoddy construction.