[Jukebox-list] WIRED SELECTION RECEIVER CAPACITORS;SEEBURG INCONSISTENCIES

[Bob E.]

At 06:24 PM 9/9/07 -0700, you wrote:
>Examining Wired Selection Receivers in my collection,
>here's what I found:
>
>WSR-3 (used in the M100A ONLY) Has a large capacitor
>next to the 2050 tube, outside the stepper cover. This
>is the motor capacitor, and was only installed on the
>WSR-3 receiver for the M100A. It also has the
>cylindrical cap under the stepper cover, and the
>square rectangular one mounted on the inside wall of
>the receiver.

I saved this message because I wanted to ask a question,
then I forgot...but here it is now!

I wondered about your description of the "square
rectangular" capacitor...is this a box-like affair
that has a mounting tab at each end, looks like it
is folded up from tin-plated steel, perhaps about
1" square on the ends, and about 3" long?  Sharp-
cornered bends in the construction of the case?

I ask because the amplifier in the Seeburg "Shoot
The Bear" that I worked on recently had a capacitor
like that, and at first I did not recognize it for
a capacitor.  It was a 10 uF 300V non-polar 
electrolytic that was put across the score-stepper
coil.  Since this unit is pretty close in age to
the Seeburg A's and B's, it seems likely they were
drawing on the same parts-bins for components!

--Bob
=======================================================================
Bob Ellingson					bobe at halted.com
Halted Specialties Co., Inc.			http://www.halted.com
3500 Ryder St.					(408) 732-1573
Santa Clara, Calif. 95051  USA			(408) 732-6428 (FAX)