Thanks a lot. This mic is a Telefunken version, with a Telefunken
power supply, both schematics match the unit I'm working on now.
Someone had worked on the transformer box before and left out all the mounting screws and taped it back together, so the can was no longer grounded, adding extra hum. Fixed that. I understand your aprehension about service on this mic, I've been
doing pro audio and mic repairs over 35 years, and this baby
scares me a bit too, due to the extremely small package.
I understand the purpose of the remote output transformer was
to keep the mic body as small as possible for TV work.
Again, thanks for the info and all your help.