What was found
(CAN) SER - ETOPS - R/H GEN INOP GEN INOP (GATE RETURN) O PREVIOUS RESET, NO FIX O AS PER EFIM, CHECKED CONNECTOR AT #2 GCU O RE-START CARRIED OUT WITH GEN FAULT WITH DISCONNECT LIGHT O FAULT CODE LEADS TO GCU INTERNAL FAULT (NO CODE SUPPLIED) O REPLACED RH GCU, AND FAULT CLEARED O PN C07500031-007, SN OFF 00324, SN ON 00060 (TC# 20190702013)