As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEFECT DESCRIPTION - LAV LIGHT INOP, BURNING SMELL NOTED IN LAV NEAR LIGHT. REMOVED AND REPLACED THE LAV LIGHT ASSEMBLY IAW CRJ AMM 33-25-07 OPS CHECK GOOD. NOTE: THE WHOLE ASSEMBLY WAS CHANGED DUE TO HARDWARE ISSUES - THE SMELL WAS THE BALLAST.