What was found
SHORTLY AFTER TAKEOFF, RECEIVED GEN 2 FAULT, TRIED RESET WOULD NOT RESET. PUT APU ON LINE, THE APU GEN KICKED OFF LINE, APU GEN FAULT, & WOULD NOT RESET, WE THEN RECEIVED FADEC FAULT & WENT FADEC ALTN MODE. REPLACED NR 2 GCU IAW AMM 24-22-12-04. OPERATIONAL TEST COMPLETED IAW AMM 24-41-00-05 & RUN NR 2 ENG IAW QRH, FOUND OK.