As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A DURING B INSPECTION FOUND THE AFT OVERHEAD EMERGENCY EXIT SIGN INOPERABLE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 4 INVERTER IAW EMB AMM 33-50-11. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.