As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISCREPANCY: ON CROSSFEED START IN KMIA WE HAD NO DUCT PRESSURE TO START THE LEFT ENGINE. LEFT ENGINE BLEED AIR SWITCH OFF LIGHT WAS ILLUMINATED EVEN THOUGH THE SWITCH WAS IN THE OFF POSITION. CORRECTIVE ACTION: REMOVED AND REPLACED THE BLEED AIR SUPPLY CONTROL PANEL IAW MM 36-11-26. OPS CHECK NORMAL.