What was found
FLT 741 MCO-SJU, AIR TURNBACK TO MCO DUE TO CLIMBING THRU 27000 FT NUMEROUS FAULTS INCLUDING ELACS, SECS AND FACS ALL HAPPENED WITHIN 2 SECONDS THEN FAC 3 FAULT WAS ALL THAT WAS LEFT NO RECOVER OF OTHER FAULTS, DID FAC 3 RESET ALL NORMAL FOR REST OF FLIGHT. INSPECTED PINS 1, 2, 3, 7, 8, AND 9 ON 30XN2 MODULE FOR TRACES OF ARCHING, NO DEFECTS NOTED. RE-INSTALLED AND TORQUE PER AMM REF WDM 24-22-02 FIGURE 004/SHEET 1. CHECKED THE CONNECTION OF EACH PHASE (A, B, C) AND NEUTRAL ON THE ID2, REMOVED, INSPECTED, RE-INSTALLED AND TORQUE PER AMM. NO DEFECTS NOTED. INSPECTED TERMINAL BLOCK 400VC2, 400VT2, AND 1998VT NO ARCHING OR DEFECTS NOTED. MEGGED ALL 3 PHASE WIRES FROM THE NR 2 IGD TO 9XU2, NO DEFECTS NOTED. REPLACED TRANSFORMER RECTIFIER NR 2 AS PRECAUTIONARY. PERFORMED TEST FLIGHT NO FAULT NOTED.