[Davidra]

I am also working on a early pp 45 Philco model 90 and thankfully the filament voltages are all normal.  

My issue is that all the grid voltages are low, some negative.  The set plays very softly and I can tune in stations.  I have completed a re-cap and the resistors and coils all check out.  The plate voltages are ok.  I will be going through the set looking at each grid connection but I was wondering if anyone had a similar issue?

The only thing I found so far is that the RF choke (labeled 52 on schematic) between the 24 and 27 tubes is missing.  I assume the radio played without it so is it necessary and could it drag down all the grid voltages?

Thanks for your help,

David


Dallas Texas