When I push the whistle button on the transformer the train speeds up and no sound. Any ideas?
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With your limited information, you may have the wires to the track mixed up.
It is an s80 u is on center a to outside
The "U" post goes to the center rail, you can pick "A" or "B" for the outside rail / Common depending on the voltage needs of the train(see the voltages on the dial - 10-19 or 5-14 - for an idea of the output using these two combinations).
The "C" post is a fixed voltage tap... 19 volts using "A" as common, 14 volts if using "B" as common.
There you go! :-)
I am wired correctly according to your diagram
What diesel locomotive or whistle tender are you using?
Postwar or modern?
The whistle diode in the transformer is probably bad and should be replaced.
Speeding up of the train is normal, as it is the design of the transformer.
Larry
Modern
