Train encountered power fault at Front M2 car while arriving station. Fault recurred at BGB2 and CCK 2. Fault was unable to reset. Performance was normal. ~~~~~ Fault code shown 820, 821, 136, 108. Limited movement done several times and found #2561-T/M-#3 got sparking and PRCB was isolated. Not:2160390 raised. Checked by Saini/Arsuddin. 14/05/20.