Are my z-5500's dead now?

[wicky woo]

So the breaker blew to my room where my computer and z5500's are hooked up, and they worked before this. Now everytime i turn them on i get a VERY loud hum and buzz out of the sub and all satellites. It won't play anything at all, even when unplugged from everything, it isnt my sound card either or anything else, its the sound system. So i'm wondering, have the died from this sudden power off?

 

[musical marv]

So the breaker blew to my room where my computer and z5500's are hooked up, and they worked before this. Now everytime i turn them on i get a VERY loud hum and buzz out of the sub and all satellites. It won't play anything at all, even when unplugged from everything, it isnt my sound card either or anything else, its the sound system. So i'm wondering, have the died from this sudden power off?

They died sorry to say from a sudden brownout and the voltage dropped.