Help with Mitsubishi WD-65833 DLP

[Hawk]

You can assign category names to the inputs from the menu. I assigned HDMI #1 the name "cable box" and the set keeps reassigning it the name "dvd player." That is just a mild annoyance. The bigger issue is that it keeps clicking back and forth between the two assigned HDMI inputs when I have them both on, causing me to have to unplug the cable box so that it will stay on the receiver input. Nothing else is connected to the DLP. Thanks.