Fender Acoustasonic Jr buzzing

[leastofall]

I have a very new Fender Acoustasonic Jr amp. I have had no problems with it what so ever until about a week ago when for no reason it started to buzz. I cut the volume from my guitar to the amp off and it continued to buzz. It buzzed even after I cut the volume on the amp itself.
I know it isn't feedback for sure, my guess is that it may have something to do with the power being supplied to the amp. What I did discover was that sometimes when it buzzes, I can turn the amp volume knob all the way up to 9 or 10 and as the buzzing gets louder and louder, when I pass 9, the buzzing cuts off and then the amp seems fine.
I am confused, can anyone help me? It happens only sporatically, and that makes it even harder to determine exactly what I maybe doing wrong. Anyways, somebody, anybody, help a brotha out.

 

[64Firebird]

It could be some other electrical thing in the room with you like a TV or even a lamp.

 

[leastofall]

I've tried playing it without anything else plugged into the same outlet and even to the extent of having the other electrical things unplugged but I still get that buzzing. I'm afraid it may be the amp itself. Has anyone else had a similar problem or have any other suggestions on how to rectify this problem? All the help is much appreciated, thanks.