Train encountered power fault at Front M1 car while departing station. Reset at JKN1 - ok. Fault rec urred departing JKN1. Fault unable to clear after TC perform ed power fault reset for few stations. TC feedback train has ~~~~~ Checked and found fault code 108,136,820 &821. Megger test on traction motor found 1506 TM2,3,4 shorted to ground. PRCB isolated and tagged. Notif raised for TM changed out : N2343639,N2343640,N2343641 N.AKWOK.K.T/27.12.21 ------------------