03-01-2026, 11:37 AM
Mike, The movement of the vane does coincide with the voltage change. The AVC voltage changes quickly. R70 has reading of 43, 27, 224 so I guess the first section is out of spec. When I first got the radio there was a wire from ground to the first section therefore making the 43 reading 0. There is no 33A resistor but I checked all the other 1 meg resistors (3) and they are within two percent, all new anyway. As for #22 the schematic shows 2 meg but parts list says it is a 1 meg which it is in my radio. The part number for #22 says it is a 1 meg resistor in the 1936 parts catalog. I don't know what it was before I replaced it (1 meg or 2 meg). I could try 2 meg. All tubes have been swapped out with little or no change. On power up the meter shows a very narrow slit and then grows almost full width and then settles down to about 1/4 inch when station is heard so this rules out mechanical.
Rod, I have two copies of he 635 schematic and both are very hard to read so I can't really tell where junctions are. Could you please post a picture showing what you said?
Rod, I have two copies of he 635 schematic and both are very hard to read so I can't really tell where junctions are. Could you please post a picture showing what you said?




