I just chatted with someone on Samsung.com who has the correct answers -- and it's not what we want --
Glen: Hi, thank you for reaching out to Samsung technical support. How may I assist you?
Visitor: how can I disable the cable/antenna screen? I want the set to start in the hub mode.
Glen: I understand that you wish to set the smart hub as a default screen.
Glen: I'm afraid, it is not possible.
Visitor: yes
Glen: The default screen and source on TV is Antenna/cable.
Hey, I have a Samsung series 5 5201 32 inch smart tv and I was wondering if it is possible to set it so that when you first turn on the tv, the smart hub appears. Thanks

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