As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISCREPANCY: LOWER EICAS SCREEN BLANKS OUT REPEATEDLY ON GROUND IN TTPP, WHEN OPERATIONAL SCREEN IS BLURRY. DEFERRED PER MEL 31-41-01 CAT A AT 1435Z ON 7/16/21. MAINTENANCE PROCEDURES COMPLIED WITH. REMOVED AND REPLACED LOWER EICAS DISPLAY PER B767 AMM 31-41-01. DISPLAY CHECKS GOOD. A/C RELEASED ETOPS 180, PLACARD TURNED.