What was found
FLT 950 HNL-ITO: DURING FLIGHT, CREW ENCOUNTERED RADIO PROBLEMS AND FOUND NR 2 AND NR 3 TRANSFORMER RECTIFIER CIRCUIT BREAKERS POPPED. THE CREW ALSO NOTED THE BOOST PUMP TANK 2 FWD CIRCUIT BREAKER OPEN. THE CREW RESET THE CIRCUIT BREAKERS BUT CIRCUIT BREAKERS POPPED AGAIN. AIRCRAFT RETURNED TO HNL AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE TROUBLESHOT THE PROBLEM TO THE NR 2 ENGINE GENERATOR AND REPLACED IAW AMM 24-21-11. MAINTENANCE PERFORMED AN OPERATIONAL CHECK OF THE NR 2 ENGINE GENERATOR. AIRCRAFT WAS RETURNED TO SERVICE.