As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2404 - EWR - FLIGHT CREW REPORTED COFFEEMAKERS EMITTING BURNING SMELL WHEN TURNED ON. EWR MX PERFORMED OPERATIONAL CHECK OF BOTH COFFEEMAKERS IAW EMB 145 VCMM 25-30-39 SUCCESSFULLY AND COULD NOT DUPLICATE BURNING SMELL. NO ABNORMALITIES WERE FOUND. AIRCRAFT WAS APPROVED TO RETURN TO SERVICE.