External train number indicator was notworking. TC feedback there was no power to the indicator. ~~~~~ 3504 External train number indicator was not working. TC feedback there was no power to the indicator. CE: check n found train nos indicator not working.  3504 train number indicator(TNI) replaced. Security/function check - OK. 3504 TNI S/N : OLD : 15K2300019 NEW : 10G1300010     Chan SW/Hanafi 44054