07-27-2017, 12:33 PM
Hi Morzh,
The components appear stock, (volume control: 2 meg, and part values match my schematic) they just were not wired per my schematic, nor any other that I could find. Some previous repairman or the last hack job "rearranged" the wiring somewhat. What I have now matches the schematic per bullitin 165b (I think, going by memory here) and sounds great.
The tone control still needs work. As I have said, I don't hear any difference in the switch settings. It is possible that the changes are very subtle and my ears are not good enough to hear the difference. It is also possible, (and more likely) that I have misswired it. I still need to dig into this some more.
Hi Nathan,
I have reviewed both posts for recreating the older resistors look. I suppose I am not enough of a "purist" to go thru this process. I do restuff the Bakelite blocks, and try to maintain the correct values per the part number stamped on the side, when ever possible. Same for the filter cans, but I will put a label on the cans indicating they have been rebuilt, with a date. I figure most people are not going to see the underside of the chassis anyway. If they do, they can tell, at a glance that resistors have been updated. I also put a label on the chassis indicating it has been serviced with a date here too. These radios are for me anyway, mostly to indicate to me what has been done. I also keep my notes and marked up schematics for my later reference, (because I won't remember).
I will be keeping most of the metalized resistors from here in. I have not seen resistors like these on other brand radios, (Zenith, RCA, etc. ) I just thought they were parts made by Philco. Much like the Bakelite blocks and the tubular capacitors I have found on earlier Philcos.
Thank you, both for all the help!
The components appear stock, (volume control: 2 meg, and part values match my schematic) they just were not wired per my schematic, nor any other that I could find. Some previous repairman or the last hack job "rearranged" the wiring somewhat. What I have now matches the schematic per bullitin 165b (I think, going by memory here) and sounds great.
The tone control still needs work. As I have said, I don't hear any difference in the switch settings. It is possible that the changes are very subtle and my ears are not good enough to hear the difference. It is also possible, (and more likely) that I have misswired it. I still need to dig into this some more.
Hi Nathan,
I have reviewed both posts for recreating the older resistors look. I suppose I am not enough of a "purist" to go thru this process. I do restuff the Bakelite blocks, and try to maintain the correct values per the part number stamped on the side, when ever possible. Same for the filter cans, but I will put a label on the cans indicating they have been rebuilt, with a date. I figure most people are not going to see the underside of the chassis anyway. If they do, they can tell, at a glance that resistors have been updated. I also put a label on the chassis indicating it has been serviced with a date here too. These radios are for me anyway, mostly to indicate to me what has been done. I also keep my notes and marked up schematics for my later reference, (because I won't remember).
I will be keeping most of the metalized resistors from here in. I have not seen resistors like these on other brand radios, (Zenith, RCA, etc. ) I just thought they were parts made by Philco. Much like the Bakelite blocks and the tubular capacitors I have found on earlier Philcos.
Thank you, both for all the help!
Chris H
N9WHH
