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Hi, I like your very neat redraw showing all the caps in the box. It looks to me as if somebody outboarded the 8mfd cap (in red) and cut the wire to the one internal to the box. That, of course, would just be replaced with a good one in the box. You could use a 10 mfd. here.
The blue wire with "?" doesn't make any sense. In making that connection they would be bypassing the three-section dropping resistor and going straight to full B+. Maybe part of the resistor was open? I think I'd leave that off and after you recap and check all resistors, see how the set plays and check that plate voltages are within specs for each tube type.
25 cycle juice was available in certain areas, around Buffalo NY, for example. I recall an earlier thread about this radio: was it that there was a mining operation running 25 cycle and the adjacent town was fed from that? A 25 cycle transformer is beefier than one for 60 cycle so will just loaf along nice and cool at 60.
Was there some other point about the schematic that I missed?
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Reece
Perfection is hard to reach with a screwdriver.
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