[RodB]

Another thing to keep in mind is that over time these radios have been worked on and not always by someone who knew what they were doing. When you see a voltage that isn't close to what it should be then it very well could be wired wrong. So, here's some logic. If point A is 110 volts and 6AQ6 pin 7 (plate) is connected to point A through a 220K ohm resistor then that plate should have considerably less voltage, around 50 volts. There's one of your dilemmas. If you measure 190 on the plate then it is connected wrong or the power supply is wired wrong or not working right.