[analogorgans] Re: Cipher....
- From: Brad Starcevich <bstarcevich@xxxxxxxxxxxxxxx>
- To: analogorgans@xxxxxxxxxxxxx
- Date: Mon, 20 Jun 2005 08:17:24 -0500
Good morning, Jean.
Interesting experience. Thanks for sharing with us. This is
the type of confounding problem that
makes one want to tear their hair out. I'll keep a copy of this e-mail
in my technical manual.
Thanks again,
Best,
Brad
Jean Moquin wrote:
Hello all list members,
Just to share.....This occured on a Rodgers model 220-II
that I am restoring. A permanent cipher had developed. This affected
key no. 41 on the "swell unit trompette / reed" ( 8' ). I checked and
rechecked every circuit and components in the signal chain. The cipher
was sounding at the correct pitch, but at a somewhat lower level than
when the key was pressed down. This seemed puzzling since the voicing
circuits here are used by three stops (4', 8', and 16' reeds).
I finaly started looking for amore "obvious" or simple thing
than a deffective component....a broken or shorted part of the
circuitry...Looking with a magnifiying glass,I finaly found that two
solder paths, located at the back of the voicing pannel may have
developed some conductivity...maybe just some oxydation did
this....Just scraping between these paths with the tip of a testing
probe corrected this cipher....
Not as obvious as a broken connection!
Best to all!
Jean
--
Bradley K. Starcevich
Senior Staff Engineer
Cougar Package Designers, Inc.
1215 Atlantic Drive
West Chicago, IL 60185
(630)231-7800 Ext.118
(630)231-1253 (fax)
bstarcevich@xxxxxxxxxxxxxxx
http://www.cougargroup.com
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