[MrFixr55]

Hi Roy,

+1 on Arran's comments. Frankly, I am surprised that there is a resistor there at all. I am also surprised at the 22K resistor between the first grid (oscillator) and cathode of the 12SA7 Pentagrid Convertor. The 2.2K resistor is between the secondary of the RF transformer and the signal grid of the 12SA7. it is also a tuned circuit, the RF section for the Pentagrid Convertor. Yes, I agree that it should be a 2.2K 1/2 W resistor. I can't see this resistor burning out as it carries RF signal at practically no current. It is between one leg of the transformer secondary (bottom of pic, rear apron of chassis) and the grid. The other leg of the secondary doesn't even go to ground, it goes to AVC. If there was an overcurrent condition, the coil would have blown to the middle of next week, not the resistor(s).

From the pic, it looks like it was a factory install, that they likely ran out of the correct resistor. This looks like an early post war or 1942 set (before manufacturing switched to war production) In either case, the manufacturer (either Arvin or Detrola, both rather small companies) was likely facing a parts shortage. I suggest that after recapping if it works, consider not messing with it, or to be pure, replace it, your choice.