What was found
DURING BOTH RIGHT AND LEFT ENGINE STARTS, BOTH RIGHT AND LEFT GENERATORS FAILED TO COME ONLINE. ACCOMPANIED WITH EICAS R/L GEN OFF MESSAGES. EXECUTED QRH PROCEDURE FOR BOTH GENS. APU REMAINED ON FOR DURATION OF FLIGHT AS BACKUP GENERATOR SOURCE, DUE TO IRREGULARITIES. UNABLE APU COLD SOAK.(<P>PERFORMED BOTH LEFT & RIGHT ENGINE RUNS IAW AMM REF 71-00-00. POWER TRANSFERS NORMAL. NO EICAS MSG. BPCU BITE TEST SHOWS NO FAULTS, AMM REF 24-22-00.</P>)