What was found
WHILE CLIMBING THROUGH FL300, THE FLIGHT ATTENDANT ADVISED CREW OF A BURNING ODOR. RETURNED TO DEPARTURE. THE ODOR WAS IN THE GALLEY AREA AND CABIN. NO ODOR IN COCKPIT. SMOKE SEEMED ELECTRICAL NOT PNEUMATIC IN NATURE. TROUBLESHOT THE ELECTRICAL ODOR, CHECKED ELECTRICAL WIRES IN THE GALLEY, FWD AVIONICS EQUIPMENT BAY AND CABIN FLOOR. NO DEFECTS NOTED. EXAMINED THE ENVIROMENTAL SYSTEM AND REPLACED THE LT AND RT CONDENSER BAGS, OPS CHECKED GOOD. NO DEFECTS NOTED. WORK COMPLETED IAW MM 21-51-13, 49-10-00, 24-00-00, AND 53-01-00.