[morzh]

I hope the tube WAS out all this time (or so I asked you to keep it) else why measure tube now.
We are talking bare socket, no tube all this time since I first asked you to yank it.

Now, the last step to make ABSOLUTELY sure it is the coil, disconnect it altogether from that point where it meets the 21 resistor and the 19 cap you cut off, AND disconnect the coil from pin 4.
Then measure either end (between them it still should be 3.8 ohm you got yesterday) to the chassis. If it is still that 70K then it is time to open it.

oh...in my post #44 by between the tube's pins 4&5 I meant between the tubes socket's pins 4&5, sorry. Measure between the socket's pins. See if there's a short.