What was found
ON FLIGHT 3333 FROM MSP, LEFT DC GENERATOR FAILED, FOLLOWED QRH, RESET C/B, J3 AND J4 AS PER MX STILL INOP. AIR RETURN TO MSP. MAINTENANCE REPLACED LEFT DC GEN P/N 23080-031, S/N ON 6754, S/N OFF 99283. COMPLETED JOB CARD 243103. OPERATIONAL AND LEAK CHECK GOOD.