What do i have do by to make my alpine iva-d310 work insted of being blank

It Depends On What Is Wrong In The First Place... (Note) Make Sure Your Radio Is Hooked Up Correctly! All The Wires Have To Be In The Correct Places for the radio To Function Properly, Its Probably Color Coated So Just Match Wire to Wire From The Radio To The Harness, If U Dont Have a Wire Harness That Matches ur Vehicles Model Or Harness Then U Will Have to Go And Purchase One At Wal Mart Or Best-buy,If U Already Have The Proper Set up And Ur Radio Is Hooked Up Correctly And Its Still Not Working. If U Can Here Sound But No Picture then It Is Most Likely Your Lcd Ribbon That Connects From The Main Unit To The Flip-Out tv Screen, Hope This Helps :-)