As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT INSPECTION, WHEN CABIN SIGN IS PUSHED TO SAFETY RED, CABIN SIGN CIRCUIT BREAKER POPS OUT. HAD AN ELECTRICAL ODOR IN COCKPIT. TROUBLESHOT AND FOUND AFT LAV SEAT BELT LIGHT BAR WITH A SHORTED SOLDER JOINT. RESOLDERED LIGHT BAR IAW MM 20-20-02-201. OPS CHECKED GOOD. ALSO FOUND AFT BULKHEAD SEAT BELT LIGHT BAR INOPERATIVE. R & R LIGHT BAR IAW MM 20-20-02-201. OPS CHECK GOOD.