What was found
ELECTRIC BURNING ODOR FROM CABIN DURING TAXI. RETURN TO GATE. MET WITH FLIGHT CREW AFTER RETURN TO GATE SPOKE WITH THE CAPTAIN AND SAID EVERYTHING WAS GOING OK WITH ONLY RT ENG RUNNING THEN HEAVY RAIN STARTED TO FALL AND THEN THE ODOR CAME INTO THE CABIN. NO COFFEEMAKER OR OVEN WAS IN USE IN BOTH GALLEY EVERYTHING WAS OFF IN THE GALLEY. NO VISIBLE SMOKE AND NO C/B POPPED ON ACFT. NO FLIGHT DECK LIGHTS FLICKER ONLY A ODOR PRESENT WHICH THE FLIGHT ATTENDANTS DONT KNOW WHAT THERE ARE SMELLING GETTING DIFFERENT STORIES. RECREATED CONDITIONS DESCRIBED ABOVE. NO BURNING ODOR NOTED AT ANY POINT. COULD NOT DUPLICATE. ACFT GOOD FOR SERVICE. WORK PERFORMED IAW FIM 49-52 TASK 801 REF FIM 21-00, TASK 830.