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

AceOGR Forum Member

Originally Posted by HOSO&NZ:

... The wire that looks like it is labeled R8 may be a fusable link on the input side of the transformer or a current sensing link used to trip the breaker. The little thing that went may be one of the TVS devices everybody keeps talking about.

I haven't studied the circuit in great detail but I reckoned R8 was a current sensing link as you mentioned. The location of the blown component is labelled C1 so I assumed it was a capacitor, I think it's part of the filtering for the AC from the transformer. If it was my transformer I might try replacing that, but since it's a low value transformer, and the owner has agreed to buy a higher rated unit for a nominal price from a friend's stockpile, I'm not going to put any more time into it.

Thanks again for the comments and ideas.

TVS= Transient Voltage Suppressor

10/5/121:47 PM

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