[PhilcoPhan1936]

Terry,

Thanks for the tip. I did as you suggested. All tube filaments light up, no excessive heat or unusual smells, so I plugged in the 80, and turned it on.
I hear a low hum, and a pop, and then next to no audio. I do hear faintly our local 50Kw talk station at 580 AM on the dial, and that's it.
I have yet to measure voltages.
I did pull the tuning coils- IF and RF, and put new grid cap wires on them, and check the coils. They all appear to ohm out to what I believe to be appropriate resistances. (I had the same issue of no stations before I did this, so I thought it might be one or more coils, hence my pulling them.)
All the dog bone resistors were pulled and new ones installed since they had all drifted out of spec.
My only concern is what I believe is the Output transformer or choke. (Part 21 on the schematic.)
I get uneven readings on the 2 sides. On the input side I get 1300 Ohms. On the output side, from one 71A to the other, I get 6.35K ohms. Measuring to the tap, I get 3.48K ohms on 1 side, and 2.9K ohms on the other side.
Also, my 71 tubes don't match. 1 is an ST style, the other is an older globe. Although they both check out strong on my tube tester.

I'll check voltages and report back.