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On most sets using 1B3's There was a wire from the tube socket Pin 2, and 7 and it was
a single wire wrapped around the ferrite frame of the flyback once or twice. That was
just to take a volt or two off the flyback to run the heater, The heater also was the
cathode of the diode tube..... I would use pin 7 , but I'm going to go out on the limb and
say either pin would work.....? I'll have to look it up though.....
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Yes you can call me "Squirrel boy"
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