PSU buzzing even with power off

[plaudium]

Starting today, my HX750 has started to make a faint buzzing noise that I can only hear when arounda couple feet away from the back of the PSU. The psu is always making noise even with power off (switch still on) until i unplug it from the wall. i have tried sticking it into a different wall outlet and the buzzing is still there. I am just unsure as what where i should go from here. I am considering RMA.

Thanks!



Specs
2600k (not overclocked)
570 2.5gb (not overclocked)
sabertooth z77
16gb xms3 1333
corsair hx750
500gb HDD
64GB SSD

 

[ttcboy]

The sound might be coming from loose internal contacts.

Better RMA it ASAP.

 

[plaudium]

Well I switched wall outlets again the it seems to have stopped for some reason. Played some games and ran some stress tests and the buzzing is gone.