Any one with a SB6120, got home yesterday and the modem was completely off. Roommate said he power cycled the power strip and moved the power adapter to a different strip with no luck. Meter checked the end of the plug and showed no 12v. This modem is only about 5-6months old. Gotta call Motorola and ask about it. Beware, made in China.  

Lucky I had my trusty old radio shack universal power.  

Update: I'll when I get home from work so they can get the serial # off the modem
Response Via Email(Motorola Technical Support) - 08/09/2011 04:09 PM
Valued Motorola Mobility Customer, 
Thank you for contacting Motorola Mobility Technical Support.  I apologize for 
the inconvenience you are having with your power adaptor for your SB6120. I am 
happy to assist you with this.
You can use any universal power adapter as long as it is the 12 V, 750mA kind. 
If you need a replacement you can call us at 1-877-466-8646 option 1 for 
Hardware, then 1, cable modems.