1641 Train prep reported propulsion faul ~~~~~ 1641 Train prep reported propulsion faulHB check     Check Tims observed FC-108/138/820/821.Further check INV 1 & 2/BCP OK.Line breaker K1,K2,L1 & L2 check ok. 0020 raise to follow up HB check. Checked by Faddzal/Gopal/Samsudin. 12/7/21 1641 Propulsion fault to further check #1641 replace HSCB to no avail,swap relay unit to #2641 to no avail.Swap VVVF control unit #2641 to no avail.Check HBre ok.Check fuse ok.Check    and found L1 terminal #1 one LGD3 cable lug flashover and cable lug loose.Replaced new cable lug and security check ok.Measure HSCB terminal 1 & 3 wire no. 7056/7104-7.98kohm.Conduct propulsion no power test/power test ok.Limited movement and depot shunting ok. KSF HSCB: Old s/n: 1039238 B17.1/02 New s/n: 1056364 B1.1/02 Not: 2294595 raise to RSW. Done by Zulq/Koh/Asruddin. 12/7/21