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Reply to "has anyone attempted to repair a Lionel CW-40 transformer?"

Many Thanks for the input.  

 

We opened it up today and spotted a small and obviously blown surface-mount capacitor, close to the AC input from the transformer. There appears to be an in-line fuse in one output lead from the transformer, covered with shrink-wrap. The transformer had output through the fuse to the board and the cooling fan operated. I suspect the blown capacitor is just the visible manifestation of a problem in something else.  

 

Solution: we will look for a replacement transformer with a higher rating.  

 

One good thing about a blown CW-40: it would be very easy to convert it to a fixed voltage supply. Just cut out the circuit board and run the transformer output directly to the output terminals. The hardest part is, you need a special triangular screwdriver bit to open the case.

 

2012-2373-CW40-circuit

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  • 2012-2373-CW40-circuit

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