11-11-2024, 12:05 PM
Mr FixIT, when I get ready to restore a radio I do just enough to verify it works or get it working. So if it didn't have good volume I would not know that. I then set about doing the restore. The set did not work when I got it. I have done a partial alignment up to the point of doing the adjustment for the 2XC compensator. I can't go further as I don't have a dial yet. Waiting on Radio Daze. I have a generator. Please see last page of the link provided below for 2XC compensator and alignment instructions. I have the IF cans with the three compensators on each on the sides. Both versions of the schematic use the same tubes. The set is pretty sensitive picking up a lot of stations in my area.
RodB, if you look at the last page of this schematic https://philcoradio.com/library/download...l.%202.pdf you will see the 99K plate resistor. I tacked in another 100K in parallel and it made no difference, the voltage on the plate of 2nd audio is still 90 volts. Makes me think the tube is not drawing current.
The 1st audio plate is low too at 80 volts vs 100. There is a 70K (37X) resistor feeding both 1st and 2nd audio plates. If I short out that resistor 1st audio goes up to 120 and 2nd audio goes up to 125. There was a slight increase in volume.
I touched the antenna to the grid of the RF amp and the volume went down noticeably. I don't know what tube is the converter.
RodB, if you look at the last page of this schematic https://philcoradio.com/library/download...l.%202.pdf you will see the 99K plate resistor. I tacked in another 100K in parallel and it made no difference, the voltage on the plate of 2nd audio is still 90 volts. Makes me think the tube is not drawing current.
The 1st audio plate is low too at 80 volts vs 100. There is a 70K (37X) resistor feeding both 1st and 2nd audio plates. If I short out that resistor 1st audio goes up to 120 and 2nd audio goes up to 125. There was a slight increase in volume.
I touched the antenna to the grid of the RF amp and the volume went down noticeably. I don't know what tube is the converter.