I was getting my morning 'fix' on Lionel when the locomotive tender whistle picked-up and began whistling. I am using a KW transformer and I tried both sides with the same result. I noticed with a train on the track there was a small spark when I changed from the 'A' to the 'B' side even though the throttle is closed. I tried several tenders with the same result. To add insult to injury I pulled-up out my 1033 and as soon as I added throttle the whistle relay also picked-up. It is hard to believe that both transformers have failed!!!! Any ideas? I am running a figure eight on the floor so there is nothing exotic wrt wiring just a single track attachment.
Well a little more process of elimination determined that the set of Lionel 6-29006 cars I had just put on the track (from a set of William's coaches) this morning was causing the problem. I removed everything except the tender and no whistle relay pick-up. I could operate the whistle with the whistle lever. Putting the 675 and William's coaches back-on an I was in business again. I eliminated my transformers from the problem but still do not understand how four Lionel coaches with only lights caused this anomaly??? Your thoughts and insight will be appreciated.