>   Dead as in the winding are open. I was just hoping
> I would not need to unwind it to find the calculation
> of the wire lengths..... Your method requires hard
> work  ... I then to be lazy on that part..... Looks
> like
> I need to get a micrometer for the job.

This is often caused by problems at the terminations, rather than inside the 
transformer itself. The wire gets nicked when the insulation is removed, 
then pulled tight when soldered onto the lug. Then vibration during 
transport causes it to break at the nick, and it does what you describe.

Often fixable by removing one turn and re-doing the termination if it is the 
outside turn, or by using a bit of TC wire to extend it if an internal turn. 

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