Today when I started my computer, the PSU made a loud pop noise and stopped working. On further inspection inside the PSU, I found that a burn mark on the underside of the circuit board, along with a mark on the plastic underneath. The burn mark appears to line up with a small transformer on the other side. I've only heard of capacitors exploding before, but I don't think it is the large capacitor next to it. Nothing on the top side of the board appears to be damaged.
Photos here: https://photos.app.goo.gl/Ge3ap9tWkV3kFwP39
Top edge of both photos is the same edge
I would like to know what might caused my power supply to blow up. This is the 3rd time it's happened this year. The first two were pretty cheap Chinese ones, this one is an Aerocool v12xt-700. The more recent two were also quite new, with this one being dated 9th week of 2018. The previous one died of a blown fuse. Might it have something to do with my house power supply? The nominal voltage in Australia is 230V, but my dad says that it routinely jumps up to 240V even 250V sometimes. The wiring in this house is quite old: it was built around 1965.
Photos here: https://photos.app.goo.gl/Ge3ap9tWkV3kFwP39
Top edge of both photos is the same edge
I would like to know what might caused my power supply to blow up. This is the 3rd time it's happened this year. The first two were pretty cheap Chinese ones, this one is an Aerocool v12xt-700. The more recent two were also quite new, with this one being dated 9th week of 2018. The previous one died of a blown fuse. Might it have something to do with my house power supply? The nominal voltage in Australia is 230V, but my dad says that it routinely jumps up to 240V even 250V sometimes. The wiring in this house is quite old: it was built around 1965.