Spectrum HD channels stopped working today after nine months of service with Spectrum. Says channel not authorizeda SD works. Crappy Spectrum DVR works ok for all. Bolt with CableCard/MCard Internet search, I saw mention of tuning adapter. Called Spectrum CableCard support, he didn't know, but suggested tuning adapter. I'm waiting for it to be shipped to try. Any troubleshooting suggestions to confirm? Any info about tuning adapters?