Hi Dave--
I have had that happen before with bulb filaments, and I was hoping it might be the case here too. The filament does look intact on the GE 55, but it's not working. I swapped in my backup GE 55 spare--which is a new/old stock--and that one doesn't work either.
Running the trains this morning, I see that my 682 is now smoking fine. That's a relief. The 6557 is still dead as a doornail: nary a flicker from the bulb. Poking the 6557 wires with the cab off will not make the bulb light at all, so evidently the resistor element burned out somehow. Is the black internal housing all that needs to be changed out? I'm assuming the 2 wires inside it are the resistor element. I'm the world's worst solderer and I'm apprehensive to try buying the part and doing it myself.
