As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 540 - PHX-DFW - AIR TURNBACK - RETURNED TO GATE FOR START FAULT IGNITION B NR 2 ENGINE WITH IGNITION B NR 1 ENGINE ALREADY ON MEL. ACCOMPLISHED MANUAL START PER MX CONTROL AND AIRCRAFT DEPARTED. IGNITION CIRCUIT BREAKERS P-39 THROUGH P-42 POPPED AFTER TAKEOFF. AIRCRAFT RETURNED TO FIELD. MAINTENANCE REMOVED AND REPLACED THE ENGINE START PANEL.