What was found
ODOR OF SMOKE COMING FROM GALLEY. SMALL AMOUNT OF SMOKE VISIBLE. COULD NOT PIN POINT THE LOCATION OF ODOR OR SMOKE. (FLIGHT 4245) COMPLIED WITH FIM 21-22-00-810-806. CONFIRMED WITH CREW SMOKE CAME FROM COFFEE MAKER NR 1 (LEFT) DURING PREFLIGHT. AIRCRAFT WAS AT GATE WITH APU ON BOTH PAX RUNNING. APU/PAX RUNNING DURING TROUBLE SHOOTING, AFTER POWER REMOVED FROM COFFEE MAKER NR 1 SMOKE AND ODOR DID NOT RETURN. GALLEY LIGHTING IS LED AND NO BALLAST INSTALLED. FOUND COFFEE MAKER NR 1 RAIL WATER CONNECTOR LEAKING AND SPRAYING ON TO COFFEE MAKER. REFERENCE AML 1931304 FOR COFFEE MAKER NR 1 RAIL FIX.