As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CAPTAIN'S LOWER ELECTRONIC FLIGHT INSTRUMENT DISPLAY UNIT, (CATHODE RAY TUBE), WOULD FADE TO UNREADABLE LEVEL, DURING LONG OPERATIONS. LOWER DISPLAY UNIT GIVE HSI AND COMPASS/GPS NAVIGATION INFORMATION WHICH WOULD BE LOST AFTER A FADE OUT. UNIT WOULD FUNCTION AGAIN AFTER A POWER SHUT DOWN AND UNIT WAS ALLOWED TO COOL. EFIS DISPLAY UNIT REPLACED AND SYSTEM OPERATED NORMALLY.