I opened up my boxcar and found the damaged board. Very small. There is a bridge rectifier made of 4 discrete diodes. Looks like the bridge rectifier output goes to the a three lead power device which feeds the LEDs. One track feed wire is now floating and it looks like it was connected to the bridge rectifier ? The PC board is severely burnt at one end of the resistor. The power device is heat sinked to the car chassis
Anyone know the P/N for the PC assembly ?