Train encountered power fault at Rear M1car while arriving station. Reset - ok. Fault recurred arri ving AMK SB. Unable to reset at AMK SB, BSH SB and BDL SB. T C feedback train slow pickup departing station. ~~~~~ Train encountered power fault at Rear M1 (1553) car while arriving station. Reset - ok. Fault recurred arriving AMK SB. Unable to reset at AMK SB, BSH SB and BDL SB. TC feedback train slow pickup departing station.  #1553 propulsion earth fault. Checked CCD fuse ok. Checked pre-resistors ok. Line breaker checked K, L1, L2 coil ok, no signs of loose wire. Checked INV1, INV2, BCH ok. Found #1553 TM4 flashover. Isolated PRnotification to HM for 1553 TM#4 Flashover:2548252. Done by: Rizman/Kumar 04/12/23