01-16-2025, 12:28 AM
Philco Phriends:
I'm working on my 42-365K, which I introduced to the Phorum last month.
I have a plan to replace the biggest capacitors, which I believe get called electrolytics.
Here are some photos:
.
I searched the archives and found Ron Ramirez's super helpful post from 16 years ago. He wrote:
"Okay. Here are the factory specs for the electrolytics used in Model 42-365:
"(37) Dual, 8 and 8 uF, 475 volts (per 1946 replacement 40-3003) - Part No. 30-2476
"(60) 12 uF, 400 volts - Part No. 30-2471
. . .
"Thus, armed with this information, it is safe to assume that 450 volt electrolytics will be just fine for this radio. In fact you could probably get by with 300 volt electrolytics for the two 8 uF units, but to simplify things, you may wish to go ahead and use 450 volts.
"8 and 12 uF are no longer standard values. 10 uF will be fine as substitutes for all three."
My questions are beginner basic.
Can I buy any 10 mfd 450 volt capacitors to replace the original monsters. For example, are these fine?
https://www.amazon.com/ALLECIN-Electroly...r=8-3&th=1
Second, how do I connect the 30-2476—which has two wires in and one wire out because, I think, there's a capacitor within the capacitor? Do I connect one new capacitor to the red wire, one to the green, and then both of them will connect to the black?
Note, btw, that I am replacing the rotten old rubber wires. (Side query: how was Philco getting rubber during WWII to use on the wiring of consumer radios?)
Once I replace these electrolytic capacitors and some of the worst wires, then I may turn to the other capacitors if the radio still works!
Thank you for helping a beginner. The question really is what replacement capacitors do I buy and how do I install the one that's a double.
Tom Russell
I'm working on my 42-365K, which I introduced to the Phorum last month.
I have a plan to replace the biggest capacitors, which I believe get called electrolytics.
Here are some photos:
.
I searched the archives and found Ron Ramirez's super helpful post from 16 years ago. He wrote:
"Okay. Here are the factory specs for the electrolytics used in Model 42-365:
"(37) Dual, 8 and 8 uF, 475 volts (per 1946 replacement 40-3003) - Part No. 30-2476
"(60) 12 uF, 400 volts - Part No. 30-2471
. . .
"Thus, armed with this information, it is safe to assume that 450 volt electrolytics will be just fine for this radio. In fact you could probably get by with 300 volt electrolytics for the two 8 uF units, but to simplify things, you may wish to go ahead and use 450 volts.
"8 and 12 uF are no longer standard values. 10 uF will be fine as substitutes for all three."
My questions are beginner basic.
Can I buy any 10 mfd 450 volt capacitors to replace the original monsters. For example, are these fine?
https://www.amazon.com/ALLECIN-Electroly...r=8-3&th=1
Second, how do I connect the 30-2476—which has two wires in and one wire out because, I think, there's a capacitor within the capacitor? Do I connect one new capacitor to the red wire, one to the green, and then both of them will connect to the black?
Note, btw, that I am replacing the rotten old rubber wires. (Side query: how was Philco getting rubber during WWII to use on the wiring of consumer radios?)
Once I replace these electrolytic capacitors and some of the worst wires, then I may turn to the other capacitors if the radio still works!
Thank you for helping a beginner. The question really is what replacement capacitors do I buy and how do I install the one that's a double.
Tom Russell