Different TV Different Channel - DirecTV

I have two tv's on my Direct TV system. When I go to watch the news on my PBS station (#27) it displays the correct show on the main tv, but a different (but still PBS) show on the other. I have rebooted the box attached to the errant tv with no results. Help!

This question, "Different TV Different Channel," is about DirecTV channels, programming, equipment, and sports.