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Philco model 70 tone capacitor
Tubesforme
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#1

08-08-2016, 10:38 PM
Does anyone know the correct value of the tone capacitor used on the Philco Model 70, before serial #B22,000? The schematic calls out the item as #48. In the parts list all that is listed is Tone control part # 03140.

I know that anything from .01 to .05 would work, but I would like to know the original value, if anyone knows it. I attempted to measure it with my capacitor checker, but it will not settle down and indicate a particular capacity, it varies all over the scale, meaning the capacitor is leaking.

Thank you.
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Nathan Slingerland
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#2

08-08-2016, 11:33 PM
There's a discussion of the value here:
http://philcoradio.com/phorum/showthread.php?tid=3191

Another great resource is the book 'Philco Condensers and More' by Ray Bintliff - Ron has details on it here: http://philcoradio.com/phorum/showthread.php?tid=14964
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morzh
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#3

08-09-2016, 08:03 AM
.015 uf is the value of the 03140 tone control.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
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Tubesforme
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#4

08-09-2016, 10:38 PM
(08-09-2016, 08:03 AM)morzh Wrote:  .015 uf is the value of the 03140 tone control.

Thank you, that happens to be the value I had thought I would use. Thank you for your confirmation. Tubesforme
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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration