Something strange is happening with this radio and my limited knowledge can’t figure it out. I’m not receiving any voltage across the filaments, and no B plus....however, the pilot light do come on and I can see why from the schematic. While tracing the filament string I discovered that pin no. 2 of 25L6 was fed to pin no. 6 of 6SF7 and not pin 7 or 8. In my opinion this is factory wiring and soldering. I then attached a wire to pin 2 of 25L6 and connected it to pin 8 of 6SF7........When I powered up I received voltage across all of the tube filaments.....However, no B voltage......Why would pin 6 of 6SF7 be used as a filament connection instead of pin 7 or 8???? I’m puzzled

:Something strange is happening with this radio and my limited knowledge can’t figure it out. I’m not receiving any voltage across the filaments, and no B plus....however, the pilot light do come on and I can see why from the schematic. While tracing the filament string I discovered that pin no. 2 of 25L6 was fed to pin no. 6 of 6SF7 and not pin 7 or 8. In my opinion this is factory wiring and soldering. I then attached a wire to pin 2 of 25L6 and connected it to pin 8 of 6SF7........When I powered up I received voltage across all of the tube filaments.....However, no B voltage......Why would pin 6 of 6SF7 be used as a filament connection instead of pin 7 or 8???? I’m puzzled

i don't see how this could have left the factory wired like that. IMHO, someone who could really solder changed the wiring around, perhaps to try to use another tube type.
Lewis