Sb5100 receive and send lights are blinking

[Vezhiux]

Hi there,
I have "plug n play" sb5100 for few years now and it was working without any problems. Using with comcast in chicago suburbs area. Today it stop working.
Power light - on
Receive - blinking
Send - blinking
Online - off
Activity - on

Does this means end of era here? Or is it still fixable? Thanks in advance everybody.