Can you blueprint it ? I mean make a drawing showing the connections and dimensions like a mechanical drawing ? If so I can look in my boneyard. I don't have any Sonys lkike that but Marantz, Sansui, Pioneer, a few others. transformers are usually made by transformer companies. Also, the chip that drives it has an equivalent likely, finding tuners that use the equivalent might turn up the right part in a totally different unit.