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Lionel KW Transformer – New Diode

Douglas

“I just purchased a used Lionel KW transformer. Both sides work great. My question is; is there a test for the train horn? I cannot get it to work. I have a new diode if i need to put it on but I want to know for sure that is the problem before I do that work. Is there another area I should look before replacing the diode? Thanks.”

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