narvick889 to Cable Forum. Sorry it's not under better circumstances.
Looks like youve done about all you can. If you've unplugged, left it unpowered for a few minutes, removed and wiped the smartcard on a clean dry cloth, and powered up and it's still stuck your STB or coneection to it (most likley the STB) is dead. That's a call to CS to get it fixed or an engineer sent out to you.