[ipwizard]

Looks to me like you have one connection to the grid cap of the 6A8G tube, and one connection to pin 5 of the 6A8G tube. I only see the two connections on the schematic.

[Image: http://i1129.photobucket.com/albums/m501...s/38-9.jpg]

[Image: http://i1129.photobucket.com/albums/m501...s/6a8g.jpg]

If there was a third one maybe it was a ground? Most of the time the ground are copper braid that usually soldered to the chassis.


Schematic here:
http://www.nostalgiaair.org/PagesByModel...013262.pdf