I have a Lionel George Washington F-19 TMCC Pacific (6-11108) that will not chuff. The engine powers up, responds to commands, all other sounds work. Note, the smoke unit does not chuff as well. From what I can tell is that both the chuff and smoke generator respond to the cherry switch. I have disassembled the engine to get to the cherry switch. I check the resistance of the switch both with it depressed and not and see a change of resistance from a few ohms to infinite. I have checked at the switch and at the pins that go to the chuff and ground on the R2LC mother board. I have also tried to activate the chuff switch with the engine powered up and pressed the switch manually without sound feedback or smoke output. Included are a couple of pics of the cherry switch (note cap between middle and end pin - replacement harness I purchased for this engine has cap across outside terminals, however, I get proper ohm reading out of the switch on the engine).
Question - where to I go from here - is there a problem with the mother board, R2LC, railsounds board in the tender. wiring?
Thanks in advance for your help.