As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THE FWD AND AFT FA RAINBOW LIGHTS WERE INOP. MAINTENANCE CYCLED POWER PER EMB AMM AND NO FIX. MAINTENANCE PLACED ON MEL 44-13-07-1 AND RETURNED THE A/C TO SERVICE. MAINTENANCE REMOVED AND REPLACED FWD AND AFT LAV PCBS PER EMB AMM TO CLEAR MEL 44-13-07-1.