As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT APPROXIMATELY 1.5 HOURS INTO A TOUR FLIGHT, THE PILOT NOTICED THAT LANE 1 AND LANE 2 OF THE VEMD WERE BLANK. THE PILOT ATTEMPTED TO REST THE VEMD AND IT DID NOT RESET. THE PILOT LANDED AT THE HELIPORT WITHOUT INTERRUPTING HIS TOUR. THE VEMD WAS CHANGED AND THERE WERE NO FURTHER PROBLEMS WITH THE VEMD.