Hi: I am wondering if there is a difference between the 41-265 and the 41-265 code 121. I ask because I am using a 41-265 schematic and see a difference in a couple of caps shown in the photo of the schematic. The schematic says #49 is a .006uf cap. Instead it is a .01uf/1200 volt cap. #47 is supposed to be a .01 uf cap but is .05uf . The label on my chassis says model 41 code 121 (shown in photo) . It is possible someone changed the caps at some point. It looks like the electrolytics had been changed decades ago. I'd be interested if anyone who has restored this chassis could enlighten me on what they found.
(This post was last modified: 05-22-2019, 10:49 AM by copiertech.)
The Code 121 simply represents the first version of the model. I don't know if there was ever a code 122 but there were often changes made during production runs that did not involve a code # change, a run# change or even documentation of any type. The 41-265 is the US version and the 41 model you have was made for Canada. The differences in the caps you mentioned are not unusual. During actual manufacturing they might have used something different than the schematic because that was what was available and the differences were not significant enough.
Thanks Bob. The values I see on the other components look to be the same as the schematic so do you think it would be acceptable to replace the caps according to the schematic?
Fredericton, N.B. Canada
(This post was last modified: 05-22-2019, 12:51 PM by copiertech.)
I'll go w/the large value for 47 and the smaller value for 49. This will give you a little bit better frequency response.
In a former life I use to work for Savin Corp in the '80s
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
You have a Canadian Philco model 41, not a USA 41-265. The Canadian 41 is similar, but (as you have discovered) not exactly identical to the USA 41-265.
For a correct schematic, you need the Canadian model 41 schematic.
Thanks for the advice Ron. So my radio is just a model 41 with no additional numbers. That might explain why the speaker is smaller than pictures I have seen of the 41-265. Also the field coil resistance is just about 250 ohms, not the 1700 ohms in the 41-265. The tube layout is the same. I have looked at nostalgiair but I haven't seen a schematic for the 41. If anyone has one handy I would appreciate a copy.
