PSU 24-pin's blue wire shows strange voltage.

yuroso

Honorable
Dec 22, 2013
5
0
10,510
Hey guys, merry christmas!
I measured the voltage of all the pins in my PSU and the blue wire in the
24-pin connector ( which goes to the MB ) seems to be strange.
I searched in the google and in my PSU's manual what voltage should read in each of the pins and and all were good except for the blue wire pin, it shows -38v instead of -12v.
Do you guys have any idea why this is happening? Maybe I should just get a new PSU?
My MB doesn't work, probably it's fried. Maybe this blue wire did it?
Thank you !