What was found
RT ENG HIGH EGT ON TAKE OFF. MAX EGT 737 SECONDS DURATION. DUE TO PREVIOUS HISTORY OF EGT FAULTS A POSITIVE FIX IS UNLOCKED FOR UPDATE. REQUIRED. PER CREW WHEN THROTTLES WERE PULLED BACK RIGHT ENGINE EGT DEBRIEF CREW, CAPTAIN STATED THAT ONCE THROTTLES BACK TO IDLE, INDICATION WENT BLANK ON EICAS AND STAND BY DISPLAYS. THE #2 ENGINE EGT INDICATION ON BOTH THE UPPER EICAS DISPLAY TOMC-MEREDITH AND STBY ENGINE INDICATION WERE BLANK. INSPECTED INLET AND EXHAUST NO OBVIOUS DEFECTS NOTED. REPLACED W6 HARNESS AND 4 EGT PROBES AT ENGINE #2. RAN ENGINES, TOOK #2 ENGINE TO 90% N1 WITH EGT 528 TWICE WITH NO FAULTS NOTED WITH EGT INDICATION.