[Guest]

I am about to recap my Philco 37-650, but one of the original paper caps, a 30-4455 is represented in the schematic as a 30-4170.

How can this be and which one is it? Any advice?

Thanks in advance!

[Ron Ramirez]

It was changed from 30-4170 to 30-4455 beginning with Run 4. Both are 0.1 uF; the 30-4455 has a higher voltage rating than the 30-4170.

Replace it with a 0.1 uF, 630V film capacitor and you'll be fine.

This change, as well as many others, are outlined in my Philco Changes In Models package, available as a free download from my website.

See this page for more details.
http://philcoradio.com/phorum/showthread.php?tid=215

[Guest]

Thanks again!