As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLIGHT ATTENDANT REPORTED, HEARD LOUD POP THEN SMOKE COMING FROM NUMBER 1 AND 2 COFFEEMAKERS. FLIGHT ATTENDANT PULLED THE BREAKERS FOR ALL THREE COFFEEMAKERS. SMOKE DISSIPATED AND FLIGHT CONTINUED WITHOUT FURTHER INCIDENT. REPLACED COFFEEMAKERS. SYSTEM GROUND CHECK NORMAL OPERATION.