05-01-2020, 07:34 PM
>Is the problem that bad?
Well if you have enough time money and energy you can fix anything.
>I am being a bit detailed in hope that someone will see something I did that would kill the oscillator.
Here the thing parts placement and layout is important. Moving parts around so they may fit better or look neater can be problematic. The designers design the circuit and on paper it should work but in actuality some parts may not get along with others. This can be the difference between working and not working. There are slight differences in mica vs ceramic even though they are the same value.
>I removed it and almost immediately 33 fried
The only thing I see that would overheat #33 is a short to the chassis somewhere between the triode plate of the mixer down thru the coil.
If everything is working save the osc connect a small cap (100mmfd or so) to pin 4 of the 7J7. Connect the other end to your generator. Turn the modulation off. Set the chassis up for manual tuning and bcb. Set dial for the frequency of the local flamethrow. Adjust the generator for the same frequency + 455kc. With this configuration the generator is acting as the local oscillator. The generator must be 455kc higher than the signal that you are trying the receive.
GL
Well if you have enough time money and energy you can fix anything.
>I am being a bit detailed in hope that someone will see something I did that would kill the oscillator.
Here the thing parts placement and layout is important. Moving parts around so they may fit better or look neater can be problematic. The designers design the circuit and on paper it should work but in actuality some parts may not get along with others. This can be the difference between working and not working. There are slight differences in mica vs ceramic even though they are the same value.
>I removed it and almost immediately 33 fried
The only thing I see that would overheat #33 is a short to the chassis somewhere between the triode plate of the mixer down thru the coil.
If everything is working save the osc connect a small cap (100mmfd or so) to pin 4 of the 7J7. Connect the other end to your generator. Turn the modulation off. Set the chassis up for manual tuning and bcb. Set dial for the frequency of the local flamethrow. Adjust the generator for the same frequency + 455kc. With this configuration the generator is acting as the local oscillator. The generator must be 455kc higher than the signal that you are trying the receive.
GL
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 it!
Terry
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
