CF30E50, no filament. No voltage at the socket, or apparently at the
CRT board. Resoldered CRT socket and flyback, no joy. Removed and
put back CRT socket to eliminate socket pin corrosion. 30KV present.
4.9 ohms across heater pins with electronics attached. Tapping everything
in reach has no effect.

Original owner of the set gave it to me, saying the picture would fade
in and out; my experience was that it faded out yesterday and hasn't
come back since.