Train encountered power fault at Rear M2car while arriving station. Fault unable to clear at MSP NB , MRB NB and RFP NB. TC feedback train performance - okay. ~~~~~ Check FC-108/101/107/310-BCU Dynamic effort achieved PWM, fault code-150/820/821. Further check found #2680 BCH IGBT flashover. PRCB isolated with tag and handle in cut off position. Checked by Faddzal. 27/06/21. #2680 Replaced BCH due to IGBT flashover. Also change VVVF due to preventive measure. Check INV1, INV2, BCH, BRE ok. Conduct no power test propulsion test ok. Limited movement done powering ok. Brake chopper unit: New s/n: 305RBO-3H.  Old s/n: 509RBO-2H. VVVF: New s/n: J1502000301-086.  Old s/n: J150200301-065. Done by Saini/Asruddin/Haslan.  03/07/21.