01-20-2021, 07:44 PM
Ok just fer grins let's start from the 6F6 and work towards the mixer. What voltage do you have @ pin 3 to ground and pin 4 to ground? Do you have some negative voltage on pin 5 ? If you remove the 6F6 does the plate voltage go up to a more normal level? Check #20 for a short to the chassis. That could explain the 240K read @ the 16K resistor.
The hum is normal and isn't from the power supply. It's from the regenerative detector.
Hats off to you if you can read that na mess, this is much better: https://philcoradio.com/library/download...l.%202.pdf
The hum is normal and isn't from the power supply. It's from the regenerative detector.
Hats off to you if you can read that na mess, this is much better: https://philcoradio.com/library/download...l.%202.pdf
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
