[Tubesforme]

<buzz primary to chassis
Methinks that's slang for measuring the resistance from the transformer primary to the chassis.

Terry

Terry, I found the source of my problem,. The CT for the 2.5V is open. I have another transformer I just compared it too and it shows the CT is there. Yes, the radio will work without the CT, but there is a hum and it is coming directly from the 27 audio tube. I have the transformer out of the radio and did a direct comparison to a known good transformer.