What was found
REF LOG A175829 ITM 2, LOST STBY BUSSES 25 MIN AFTER T/O. MID LAV SMOKE DETECTOR WENT OFF W/LIGHT SMOKE IN AREA THEN DISAPPEARED. REPLACED STBY INVERTER CHKS OK PER MM. CAPT REPORTED, THE DAY BEFORE RANDOM SMOKE DETECTORS IN FRONT AND A FT LAVS WENT OFF THEN STOPPED WITH NO VISIBLE SMOKE IN A/C. THIS STATIC INVERTER (P/N 2410 02136) (S/N 339) IS SUSPECTED TO HAVE CAUSED PROBLEM.