As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT ESS BUS CAUTION JUST AFTER ROTATION COMPLETED, QRH, NO FIX MSG CONTINUED TO CYCLE ON & OFF 4 - 6 TIMES PER MINUTE. ALL SYSTEMS REF IN QRH THAT ARE LOST CONTINUED TO FUNCTION NORMALLY. EMERGENCY LIGHTS CYCLED ON & OFF WITH CAUTION MSG. R & R ESS BUS SENSE RELAY K1XD IAW MM CH 24-51-27, ALL CHECKED GOOD.