If it's like my White Hawk's screen, there are two spring-loaded clips behind the tv, along the bottom. They're about 10" apart from each other. Find them and pull them toward you. Once those tabs are squeezed, lift the TV up about an inch and be prepared to catch it. It'll slide right off a horizontal rod that supports it.
Hope that works for ya!
2014 White Hawk 30DSQB Summit Edition
2007 Ford Expedition EL 4X4 5.4L gas with 3.73 rear