TV will be sitting on a shelf recessed into the cabinet
They make RV TV and appliance grip hold downs. They can be found at any RV camping store or RV dealership.
TV GRIPS"A welcome addition to any boat or RV! New TV Grips hold portable TVs and appliances safely and securely. Many times stronger than shock cord or hook & loop fasteners. 3M adhesive removes cleanly. Safe for use on gloss wood finishes......" http://www.thumblockfasteners.com/TVGrips.htmlI used them to hold down a smaller than the opening temporary micro wave and it never budged. Great product for holding down stuff in the RV! :C