I worked on these by the hundreds. So many a shop I contracted for hired my son to to piece work on the connection / Eprom sets. Those sets
probably paid 20% of his collage.
Bottom line is I can not remember ever changing a FBT transformer
in one. That includes CTC175, 176, 177, 186 & 187.
Save your $$ or put it toward test eq. etc.
If it were not for those connections we would not have seen very many of these
sets. Quite good IMHO.
73 Zeno
LFOD !