03-14-2011, 09:40 PM
I did a little looking around pins 2 and 7 are the cathodes the two triode in the 7AF7. If I use the diagram for the 121 model one of the cathodes ( the amp side) is tied to ground though a 2.2K resistor. If it is open you will have a high voltage on the cathode and the set won't work.
Did you order the service info from Chuck? That should have the data for the resistor and the voltage measurement. Is your local oscillator working?
Terry
Did you order the service info from Chuck? That should have the data for the resistor and the voltage measurement. Is your local oscillator working?
Terry
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
