I'm not quite following what your problem is (well, I know it doesn't work) from your 2 posts. "Channel Search?" Are you referring to Guided Setup? The process where the Tivo figures out what channels you have? Heck, I'd leave too. The appropriate test while the tech is onsite would be: Messages & Settings -> Settings -> Remote, CableCARD, & Devices -> CableCARD Decoder -> Configure CableCARD 1 (Multi-Stream) -> Test Channels That said, if the bottom line for this guy is "I called in the stuff, I'm outta here," I'd say email the folks at We_Can_Help@cable.comcast.com, and tell them that you are being "helped" with a cut-and-run approach. They tend to respond in under 24 hours from what I have seen. If you want to take the firmly proactive approach, in your email, include your Comcast account number, the M-Card serial number, and the Data, Host ID, and UnitAddress details from your CableCard Pairing screen.