Android 4.2 Using HDMI On BeagleBone Black

I created the image on BeagleBone Black + LCD7 Cape.
Android JB is Loaded alright, but nothing showed on the LCD7 Screen.
What will have to do to make it show on the LCD7 Screen?

On further work i noticed that the it is the Backlight that does not come.
Pls how do i Correct this in the Firmware?