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Ed Jacobs
 Post subject: Aetna 575 volume control problem
PostPosted: May Fri 25, 2012 7:54 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 5613
Location: Portland Oregon
I am trying to bring this cute tombstone back to life but the volume control is missing. on the schematic it shows a pot with another resistor in series with it and refers to both of them as the volume controls. Could this have been a tapped pot or just a series resistor?
Ed
schematic here
http://www.nostalgiaair.org/PagesByMode ... 022827.pdf
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Philco Fan
 Post subject: Re: Aetna 575 volume control problem
PostPosted: May Fri 25, 2012 8:14 pm 
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Joined: Jul Tue 18, 2006 5:23 am
Posts: 4870
Location: Roseville,Ca
Looks like it's in series to me.
Phil

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Norm Leal
 Post subject: Re: Aetna 575 volume control problem
PostPosted: May Fri 25, 2012 9:09 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 28941
Location: Livermore, CA
Like Phil said it's in series but sometimes within the pot. If it's there won't be a tap. The volume control will just stop at 100 ohms.

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Ed Jacobs
 Post subject: Re: Aetna 575 volume control problem
PostPosted: May Sat 26, 2012 12:26 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 5613
Location: Portland Oregon
I can't quite make out the value of the pot but it looks like it could be 75K, is that right?
Thanks guys..
Ed
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Philco Fan
 Post subject: Re: Aetna 575 volume control problem
PostPosted: May Sat 26, 2012 2:12 am 
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Joined: Jul Tue 18, 2006 5:23 am
Posts: 4870
Location: Roseville,Ca
75K is correct!
Phil

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I've been doing so much for so long with so little I can now do anything with nothing!

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