Thanks Mick. I knew the description was somewhere.
And for Jerry and anyone else who has this problem I hope my photos are helpful, if only to show that it’s possible to fix with a little effort and care.?
If it happens again I have eight FT50-43 toroids in my junk box and I’ll build a new, bigger transformer. I’m assuming that mine failed during normal operation but with bad luck, and that a bigger one with 3 turns of Teflon wire would perform similarly but with a greater safety margin. If that’s not a reasonable assumption I’d appreciate further advice. The larger transformer would not fit in the same space and would require a few millimeters of standoff space and therefore longer leads, but with luck it might not cause any additional problem—after all it’s not a VHF device…at least not intentionally!
Jack
N6LN
John Terrell, N6LN