03-18-2018, 09:00 PM
Ok, Check your volume control connections for shorts to the chassis. Check both C12's to be sure that there isn't a wiring error.
How it works is that the audio signal from the detector is at the bottom of the 2nd IF transformer and is connected the junction of R7 and R8 (avc line). Goes thru C12 to the left side of the volume control. Audio signal goes from the left to the right side of the volume control. The wiper taps off the audio and connects it to the input (grid cap of the 6F5) thru C12 (the other C12).
We connected an audio signal to the inputs at the 6P5 and 6F5 and all was well. But when we connected the audio signal to output of the detector we got zip. So something between the left side of the volume control and the grid cap of the 6F5.
Happy Hunting!!
How it works is that the audio signal from the detector is at the bottom of the 2nd IF transformer and is connected the junction of R7 and R8 (avc line). Goes thru C12 to the left side of the volume control. Audio signal goes from the left to the right side of the volume control. The wiper taps off the audio and connects it to the input (grid cap of the 6F5) thru C12 (the other C12).
We connected an audio signal to the inputs at the 6P5 and 6F5 and all was well. But when we connected the audio signal to output of the detector we got zip. So something between the left side of the volume control and the grid cap of the 6F5.
Happy Hunting!!
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
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
