Our new converter boxes don't work with our older TVs. The old boxes worked fine.
would you be more specific? what is the model number that you have? how are you trying to attach it to the TV (HDMI? Coax?)
I am not a Comcast Employee. I am a Customer Expert volunteering my time to help other customers here in the Forums. We ask that you post publicly so people with similar questions may benefit from the conversation. Was your question answered? Mark the post as Best Answer!