[Bob Andersen]

I hope someone with a 15 chassis can help me out with this one.
I found this cap crudely solder across the #42 tube plates.
[Image: http://farm6.staticflickr.com/5469/71922...84a7_z.jpg]

I got a copy of the 15 schematic from Chuck which shows it as #57, but no value.
[Image: http://farm8.staticflickr.com/7230/71922...3b7f_z.jpg]

The parts lists shows #57 as a 240,000 resistor across the volume control - not illustrated. There's no resistor across my volume control though.
It does list #58a as 0.002 mfd cap across the output transformer primary. Perhaps this is the capacitor in question ?
[Image: http://farm8.staticflickr.com/7105/71922...2de7_z.jpg]

Finally, to make matters more confusing, I dug up an original Philco schematic and it shows #57 as a resistor across the #42 grids and no cap between the plates
[Image: http://farm8.staticflickr.com/7092/71923...ec82_z.jpg]