Train encountered power fault at car 1648 while arriving station. Unable to reset at TCR WB,TWR WB a nd TLK WB. TC feedback slow in powering. ~~~~~ Fault code 820, 821, 108, 827 occured. Found CHRe1 resistor open circuit. - Replaced. Function tested ok.  Limited and depot shunting ok. N.A/kumar/arun/03.10.22