Panasonic finally got back to me after three days... Via email! They asked me to call them back. So I did... They had me go through all the brainless tests of troubleshooting my display.
1. Unplug the display from surge protector.
2. Unplug all cables (hdmi, component, etc)
3. Had me run the self test.
4. Asked if I could still see the band/bar.
5. Asked if the band/bar was thick or thin.
Did they think the issue was going to mysteriously vanish?
I am now set up for the...