Skyroom Ron,

It starts up with the correct input due to CEC. Although, Sony and Samsung's version of CEC - Anynet+ and BraviaLink+ - aren't officially compatible, is seems that powering up uses the same code so that actually works in your favor.

In most cases, the television may revert back to the Always On connection - the co-ax tuner, even though the may or may not be anything plugged into it. That's the only priority I know if when a HDMI port is disconnected.