New PSU doesn't work!

fnatic

Honorable
Jun 25, 2013
366
0
10,860
Just got a new PSU today. Plugged it in al wired up and.. it doesn't turn on. My upper fan LED turns on for a split second then back off. Tried my old PSU and it works swimmingly. So does that sound like I'm part of the crappy like 10% that it failed?