Train encountered power fault at Front M2 car while arriving station. Unable to reset at BBT SB, BGBSB and CCK SB. TC feedback train performance still ok. ~~~~~ Train encountered power fault at Front M     Check Tims FC-137 pre-charging resistor protection and 108 prpulsion fault.Further check line breaker found Chre 1x2 precharging resistor burn and Chre2 x 1 pre-charging resistor burn,c/o.L1  L2,HB check no abnormal.Inv1,Inv2,Bch,CCD shoes and fuse check ok.Limited movement powering check ok. Side findig found FC 883/881/879/877/875 Tims related FCs.Further troubleshooting revealed,CPU4 card faulty.(Fault transfer from 2669 to 1629)c/o card-1629 fault cleard. CPU4 card:- New s/n: DA 86420PX Old s/n: DA 86497PX Not:2495787 raise to card shop. Done by Sanip/Koh. 08/06/23