Virus TI ghost noise when it is closed!!!

[zalivad]

HI~I wanna know anybody have that problem like me~~

I power off the Virus Ti2 desktop,it is stand by mode.no problem.
ok.I turn off my patch board,and Ti's all light are closed,not stand by mode.It's like any other synth off mode.completely closed.

but~~~

This closed machine will make some horror noise sometimes from analog output jack,this sound like a short bright rubber bass.about every 10-30 second or when i open some website, it will punch that sound out,and I unplug USB,the noise still happen~~~~It's terrible~~but when i open my patch board and Ti will be stand by mode(just one red led).The noise is not happen anymore.

have anybody this problem too~~~?