Philco 37-610 Mica Cap replacement question - Printable Version

+- The PHILCO Phorum (https://philcoradio.com/phorum)
+-- Forum: Philco Radio Discussions (https://philcoradio.com/phorum/forumdisplay.php?fid=5)
+--- Forum: Philco Electronic Restoration (https://philcoradio.com/phorum/forumdisplay.php?fid=8)
+--- Thread: Philco 37-610 Mica Cap replacement question (/showthread.php?tid=882)

---

Philco 37-610 Mica Cap replacement question - Guest - 12-16-2007

I have a Radiobar which utilizes a Philco 37-610 chassis. Since my intention is to use this daily (the radio not the bar) I've decided to replace all electrolytic and paper caps and all resistors that I can reasonably access.

There is an 11 lug solder terminal strip which I'm in the process of replacing. There are two 110 pF micas (one of which is shunted by a 51K resistor) that would appear "neater" if they were replaced rather than reused.

Can I replace these with 100 pF ceramic which I have or should I order the appropriate 110 pF instead? The caps in question are labeled #30 and #32 in the code 121 schematic for this radio.

If your advise is to use 110 pF caps what type/composition would be best?

Thanks, ED

---

- Ron Ramirez - 12-16-2007

Hi Ed

Since the caps in question are not in the RF section of the radio, 100 pF ceramic discs will be fine for replacing these.

---

- Guest - 12-16-2007

Thanks Ron!

---

- Guest - 12-17-2007

Hi Ron! Made the necessary changes as you suggested and the radio "sings". Thanks

Interestingly, when I first picked up this set it did play. When I pulled the chassis I decided to take some voltage readings and was I surprised to find that most, if not all, voltages were only 50% of normal. Wow...tubes are really forgiving!!

Thanks again, ED

---