01-21-2012, 10:00 PM
OK Take #89 and disconnect the + end which going over to the 7Z4. After disconnecting the + side Reconnect it to the chassis. The choke is already in the set. Try it and it will probably have a lot of hum. So double the value of the second filter cap.If you still have a lot of hum try adding a small cap in place of #89 like a .1mfd 630v.
Terry
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
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
