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41-290 Auxiliary Input Jack Wiring
rd48sec
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#1

01-16-2020, 06:07 PM
I am tasked with installing an auxiliary input for a Philco 41-290.  It will be a simple 1/4" switched jack.  The question is where would you break the circuit to wire in the 1/4" jack?  I would like to control the volume with the front knob.

I have attached the schematic.

Thanks!


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.pdf 41-290 schematic.pdf Size: 353.76 KB  Downloads: 279
(This post was last modified: 01-16-2020, 06:08 PM by rd48sec.)
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Radioroslyn
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Posts: 7,300
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City: Roslyn Pa
#2

01-16-2020, 06:56 PM
Break the connection @ the blue wire, #38 and #39.  Audio input connected @ left of #38.
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!

Terry
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rd48sec
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Posts: 15
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Joined: Sep 2019
City: Eau Claire State, Province, Country: Wisconsin
#3

01-16-2020, 07:08 PM
Awesome!  That's where I was thinking.  Just wanted to be sure.

Thank you!
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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration