KW transformer

Is this a transformer that hasn't been used in a long time? While it could very well be a bad circuit breaker, based on my own experiences with my KW, I would guess you have a genuine short going on there. The coils may look good, but visual inspection may not tell you anything, there could be a short there. The fact that it shows up when you actually apply power tells me something. I am sure others will pipe in, but I would be leery of assuming the circuit breaker is bad, my guess is it is something shorted. 

I saw your post on the other forum and agree with their suggestion.  Try a new (modern) circuit breaker.  

Circuit breaker stuck open, replace.

I'm singing with the chorus, top suspect has to be the circuit breaker. 

A shorted turn in the coil won't kill all the voltage, it'll just result in a lot of heat in the transformer core.  It'll also typically exhibit a loud hum as it'll be drawing lots of current.  Finally, the coil will actually start smoking as it burns off the enamel insulation.

Thanks for the advice everyone.  I will try the circuit breaker and let you know how it comes out.  

I have enclosed my Christmas set up so you can see the transformer is used for

Thanks again

Love the action. Looks like you have taken over the living room. How long are you allowed to keep the lay out up?

We take it down right after the  Epiphany (Jan 6th) 

Thanks for the advice. I finally got the time to replace the circuit breaker and it works like a champ.  Thanks again

I am in the process of changing out the circuit breaker on my kw with a newer version. The new circuit breaker came with spade connectors but the one wire connection is a flat rectangle wire. My guess is to solder a wire to this and shrink wrap them then make my connection, any other suggestions?

The flat wire is on the right still soldered to old circuit breaker.

Shrink wrap works great and I would consider replacing the original disc type diode with a modern wire type.