01-17-2013, 04:47 PM
That sounds for sure like an open cathode on the 35Z3, or a tube that's REALLY flat.
Do you have a silicon diode you can temporarily sub across between plate and cathode of the 35Z3 (just for test purposes, don't leave it in.)? The band end of the diode would go to cathode. If you get voltages at that point, it would verify a dead tube.
Do you have a silicon diode you can temporarily sub across between plate and cathode of the 35Z3 (just for test purposes, don't leave it in.)? The band end of the diode would go to cathode. If you get voltages at that point, it would verify a dead tube.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
