As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3757, CREW REPORTED CABIN EMERGENCY EXIT LIGHTS CYCLE ON AND OFF (FLICKER) ON GROUND WITH COCKPIT SWITCH IN THE "ARM" POSITION. AIRCRAFT REMOVED FROM SERVICE. REPLACED RELAY K135 IAW AMM 20-39-00 EMERGENCY LIGHTS OPERATIONAL CHECK GOOD IAW AMM 33-51-00. AIRCRAFT RETURN TO SERVICE.