Train encountered power fault at Front M2 while arriving station. Reset at DBG1 - to no avail. Resetagain at SOM1 - to no avail. Reset again at ORC1 - to no av ail. TC feedback slow pick up when departing station. ~~~~~ 2505 Train encountered power fault arriving station. Reset at DBG1 - to no avail. Reset again at SOM1 - to no avail. Reset again at ORC1 - to no avail. TC feedback slow pick up when departing station. CE:2505 power fault.  2505 found having permanent power fault indication. Checked charging resistors, CCD fuses & CCD shoes - OK. Meggar test on TM & found TM4 failed test. U/V/W found shorted. Isolated/tagged PRCB. Notif 2431139 raised to RSW to replace TM4.  Sarma/Lee PT 44864 Notif 2431139 Name                          : SARMA Date of Occurrence            : 30/10/2022 Last Service Date             :   EMU / Equipment / Location    : 2505 / TRACTION MOTOR / 4 Equipment Serial No. (if any) :   Description of fault / cause  : TRACTION MOTOR 4 SHORTED Measurements (if any)         : U,V & W MEGGER TEST FAIL Required Rectification        : Required Servicing