What was found
AFTER STARTING NR 1 ENGINE SELECT START SWITCH DID NOT DISENGAGE WITH START LIGHT REMAINING ILLUMINATED. STARTER/GENERATOR FAILED. SMOKE FROM COWL. RETURNED TO GATE. INTERROGATED EPCU. NO FAULTS. FOUND NR 1 STARTER GEN BURNED OUT. R & R NR 1 STARTER GEN IAW MX 6243101. DUE TO ACFT HISTORY AND IAW FIM TASK 80-00-00-810-803. R & R K1 AND K2 IAW AMM TASKS 24-31-31-000-801 AND 24-31-31-400-801. R & R ESC PANEL IAW AMM TASKS 80-00-01-000-801 AND 80-00-01-400-801. R & R NR 1 GCU IAW AMM TASKS 24-31-06-000-801 AND 24-31-06-400-801. ALL OPS TESTS GOOD. SET CLOCKS IAW AMM TASK 31-21-01-820-801. NO FURTHER DEFECTS. RETURNED TO SERVICE.