Able full view on HDMI output

Hi friends, I have and old flytouch II and I would make it like smart TV/android box.
This PAD has an hdmi output but only show movie on TV (when I launch movieplayer I've to press home button and the PAD's screen become black and appear on TV)...
Is possible to make hdmi output the default view or I've to modify hardware inside?

thansk a lot:D