What was found
DURING #1 ENG START, AFTER START LEVER TO IDLE, NO LIGHT OFF NO INCREASE IN EGT, ABORTED START. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE L/H EXCITER BOX REF B737-800 AMM 74-11-01. PERFORMED SNAP CHECK, SNAP CHECK SUCCESSFUL REF AMM 74-00-00. ATTEMPTED TO START ENG #1 ON L IGNITION, ENGINE START NOT SUCCESSFUL. REMOVED AND REPLACED #1 ENGINE L/H IGNITION LEAD REF AMM 74-21-01. PERFORMED SNAP CHECK, SNAP CHECK SUCCESSFUL. ATTEMPTED TO START ENG #1 ON L IGNITION, ENGINE #1 START SUCCESSFUL.