Dan Padova posted:
I hooked up the whistle/bell switch, between my post-war ZW and the track, following the instructions. Unfortunately the bell will not sound. If I slide the switch to the bell position and turn the track power on, the circuit breaker I installed between the transformer and track trips instantly. Reversing the wires doesn't help. The whistle does work though. However, the whistle works without the whistle/bell switch wired into the mix.
Dan, I received a Bell / Whistle switch once with another loco that did the same thing. Try removing the B/W switch and just reverse the transformer leads to the track and try the whistle button on the zw that way. If it still trips the breaker it is the board but I kinda doubt it. The components most likely to fail in old electronics are the electrolytic capacitors. It is not a bad idea to swap out the electrolytic caps before they fail. J
