What was found
SEA- CREW RETURNED TO FIELD DUE TO FUSELAGE DOORS WARNING LIGHT ILLUMINATED EIGHT MINUTES AFTER DEPARTURE, PASSING THROUGH 14,000 FEET. FIVE MINUTES LATER DURING DESCENT FLIGHT ATTENDANT REPORTED HEARING A BANG. AIRCRAFT LANDED WITHOUT INCIDENT. FOUND PAINT OVER SPRAY ON RELEASE LATCH ROLLER ASSEMBLY, CAUSING RELEASE BUTTON TO STICK OPEN. CLEANED AND LUBED ROLLER ASSEMBLY ON REAR CARGO DOOR. NO PARTS REPLACED. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.