Starboard Input
When you have the LEAP board on do you see a STARBOARD logo or LEAP logo?
If you see a STARBOARD logo the TV is not on the correct input source.
Please make sure the mini computer behind the LEAP display is powered on, then switch the LEAP display source to HDMI 1 or HDMI 2 until you see the LEAP logo.
Please let me know if this helps.