As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 3542 DURING THE TAXI THE EMERGENCY EXIT SIGN AT THE SERVICE DOOR WAS INOPERABLE. THE AIRCRAFT WAS REMOVED FROM SERVICE. TROUBLESHOT AND FOUND A BROKEN WIRE ON THE FORWARD SERVICE DOOR LIGHT, RE-SPLICED WIRE IAW CRJ WMM 20-16-00. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.