Path: utzoo!attcan!uunet!lll-winken!ames!pacbell!ptsfa!dmt
From: dmt@ptsfa.PacBell.COM (Dave Turner)
Newsgroups: sci.electronics
Subject: Re: Sherwood Receiver Debugging
Message-ID: <4655@ptsfa.PacBell.COM>
Date: 13 Jan 89 23:30:35 GMT
References: <74000002@p.cs.uiuc.edu>
Reply-To: dmt@ptsfa.PacBell.COM (Dave Turner)
Organization: Pacific * Bell, San Ramon, CA
Lines: 22

In article <74000002@p.cs.uiuc.edu> gillies@p.cs.uiuc.edu writes:
>
>I am trying to debug a 1966 Sherwood Receiver.  This is a high-quality
>
>THE PROBLEM: On all input settings (AM, FM, Phono, etc), the left
>channel plays about 40Db more quietly than the right channel.  If I
>There is a mono switch, and in this mode, both channels work
>perfectly, although slightly quieter than in the stereo mode.
>

Check the coupling capacitors in the signal path.
Since both channels are approximately equal in mono,
check the circuitry in the preamp portion that precedes the
stereo/mono switch.

I have had similar troubles with other stereos from that era.
A Heathkit (AA-21 ? I think) had a bad capacitor in a fancy pc couplet
that had a bunch of resistors and capacitors in a flat package with
about 10 pins.

-- 
Dave Turner	415/542-1299	{att,bellcore,sun,ames,pyramid}!pacbell!dmt