As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLL EMERGENCY LIGHTS AT R2 DOOR AND DOWNLIGHTS UNDER OVERHEAD BINS AT 28C AND 30C CAME ON AND STAYED ON FOR ABOUT ONE MINUTE. GROUNDED - YES. PER WDM 33-51-14 ALL AFFECTED LIGHTS GO TO THE M1672 EMERGENCY BATTERY POWER SUPPLY. INSP OF P/S SHOWED A BROKEN TEST SWITCH STICKS. REMOVED AND REPLACED M1672 AFT R/H P/S IAW AMM 33-51-06. 1 MIG 51A INST/RMVD INSTALLATION TEST GOOD.