04-01-2019, 03:27 PM
Hi Gregg,
I am also working on a Model 54, and totally agree that it is stuffed. I have few questions that you might have run into.
1) Shield removal. The are two shields for tubes 75 & 78. They appear to be rusted on to the shield base, much like old steam pipes. Any ideas as to how to remove them without damaging either the tubes or the shield mounting base? It appears that I cannot remove the tubes until the shields have been also removed.
2) Capacitor values. I am using the schematics from both Rider Volume 3 and most often needed 1926-1938 radios. The parts list indicates part #41 as containing two 12 uf 200 Volt electrolytic, and Part #15 as being 3 uf. This does not match the schematic which shows two separate part #15 one being 3 uf and the second part #15 being 12 uf. Part #41 shows only one of the two 12 uf sections being used. While I can make a good guess as to what the capacitors connections should be, I would rather see a schematic that shows proper electrolytic wiring. I would appreciate if I could get an accurate schematic.
Secondly, removing the electrolytics seem a difficult task, at this point leaning toward just cutting the wires to them and replacing with modern smaller electrolytic
3) Does your radio have about a 5/8" hole about 1/2" under the shield can on the back of the radio. It appears like there could have been something mounted there, but the pictorial I have does not show it?
4) Are you going to restuff the block capacitors. They appear to be more difficult to access than previous Philcos such as the model 90 and 91 I have worked on.
Thanks for whatever information you might have.
Bruce KB1ORG 508 759 3700
I am also working on a Model 54, and totally agree that it is stuffed. I have few questions that you might have run into.
1) Shield removal. The are two shields for tubes 75 & 78. They appear to be rusted on to the shield base, much like old steam pipes. Any ideas as to how to remove them without damaging either the tubes or the shield mounting base? It appears that I cannot remove the tubes until the shields have been also removed.
2) Capacitor values. I am using the schematics from both Rider Volume 3 and most often needed 1926-1938 radios. The parts list indicates part #41 as containing two 12 uf 200 Volt electrolytic, and Part #15 as being 3 uf. This does not match the schematic which shows two separate part #15 one being 3 uf and the second part #15 being 12 uf. Part #41 shows only one of the two 12 uf sections being used. While I can make a good guess as to what the capacitors connections should be, I would rather see a schematic that shows proper electrolytic wiring. I would appreciate if I could get an accurate schematic.
Secondly, removing the electrolytics seem a difficult task, at this point leaning toward just cutting the wires to them and replacing with modern smaller electrolytic
3) Does your radio have about a 5/8" hole about 1/2" under the shield can on the back of the radio. It appears like there could have been something mounted there, but the pictorial I have does not show it?
4) Are you going to restuff the block capacitors. They appear to be more difficult to access than previous Philcos such as the model 90 and 91 I have worked on.
Thanks for whatever information you might have.
Bruce KB1ORG 508 759 3700
