As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: LEFT EICAS COMPUTER MESSAGE TOPS EICAS SCREEN BLANK WITH EICAS DISPLAY CAUTION MISC BOTH EICAS SCREENS FLICKER. REPLACED UPPER EICAS SWITCHING MODULE PER AMM 31-41-04 (AALA201912269007) AND THE LEFT HAND EICAS COMPUTER PER AMM 31-41-02 (AALA201912309001).