What was found
APPROX 1 MIN AFTER TAKEOFF, RUNWAY 36R, GEN 3 OFF. ALERT SHORTLY AFTER THAT GEN 1 OFF. ALERT ACCOMPLISHED GEN 3 DISCONNECTED AFTER GEN 3 FAIL ALERT, 10 SEC AFTER 1ST ALERT. GEN 1 RESET ONCE, BUT SUBSEQUENTLY FAILED AGAIN. GEN 1 DISCONNECT IAW QRH. FINALLY RECEIVED TR 1 FAULT FAIL ALERT. QRH FOLLOWED, RETURNED TO EMER LANDING RWY 36C. R & R THE NR 1 & 3 ENG GCU'S IAW AMM CHPT 2 4-21-02-2. RAN BOTH ENGS IAW JRH, VOLTS & FREQS WERE SAT, ALSO EPCU RTS WAS SAT. PERFORMED DC TIE TRANSFORMER 1 RECTIFIER TEST IAW AMM CHPT 2 4-30-00-5. ALL TEST WAS SAT. ACFT OK FOR SERVICE.