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Philco 90 Tone control question
37silverstreak
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#1

01-16-2012, 11:30 PM
Does any one know what the capacitor values are for a Philco 90 tone control? Part #4037A, item 31 on the Rider schematic. thanks!
Kevin
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Chuck Schwark
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#2

01-17-2012, 12:26 AM
Right from the Tone Control section of my Parts Values Page:
Four switch positions:
Point 1 - 0.0 Mfd. (open)
Point 2 - .015 Mfd.
Point 3 - .01 Mfd.
Point 4 - .01 Mfd.

http://www.philcorepairbench.com/tonectl.htm

Be sure to use 630 volt caps.

Chuck
Chuck Schwark,
The Philco Repair Bench
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37silverstreak
Senior Member
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Posts: 299
Threads: 107
Joined: Mar 2011
City: Sheboygan Falls,Wisconsin
#3

01-17-2012, 06:47 PM
Chuck Schwark Wrote:Right from the Tone Control section of my Parts Values Page:
Four switch positions:
Point 1 - 0.0 Mfd. (open)
Point 2 - .015 Mfd.
Point 3 - .01 Mfd.
Point 4 - .01 Mfd.

http://www.philcorepairbench.com/tonectl.htm

Be sure to use 630 volt caps.

Chuck
Thank you Chuck!
Kevin
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