Train encountered power fault at front M1 car departing station. Reset - ok. ~~~~~ 1535 FC 141 (Propulsion K failure). Replaced 'K' contact assembly. Serviced L1/L2 contact tips. CCD shoes/fuses/cables/height checked - OK. Limited movement/depot shunting - OK. 1535 'K' contact Assembly S/N : OLD : 101565. NEW : 1020363.  Aminur/Chan SW. 22/03/2021.