What was found
BLEED TRIP OFF LIGHT CAME ON DURING CLIMB, NO RESET WITH QRH. FOUND FITTING TO BLANKING CAP LOOSE ON BAR WITH MINOR LEAKAGE. SECURED, NO FURTHER LEAKS. DUE TO SHOP HISTORY, SUSPECT HIGH STAGE REGULATOR BAD. REPLACED HIGH STAGE REGULATOR AS PRECAUTION IAW AMM 36-11-07-000-801, AND AMM 36-11-07-400-801. NO HELP. FAULT REMAINS. RAN ENGINE FOR 5 MINS AT IDLE. NO FAULTS. WENT TO 80% N1 & AFTER APPROX 3 MINS, BLEED TRIP NR 2 LIGHT CAME ON. WOULD NOT RESET, UNTIL AFTER 4 MINS, ENGINE IDLE COOL DOWN RUN. R & R BLEED AIR OVERTEMP SENSOR, NO HELP IAW AMM 36-11-05. R & R PRECOOLER, NR 2 ENG R & R AND WORK PACKAGE 29-0576-8-0073, ENG RUN OPS CHKD GOOD. NO FAULTS.