Category Archives: Polymoog 203A

Polymoog 203A restoration parts list

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For those mad enough to attempt a repair or god-forbid restoration of their PolyMoog, here is a running list of parts I have/will/need to replace.  This will be updated as I get stuff.

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Power Supply has had its capacitors replaced.  Note the 4700uF is a radial -they were out of axial capacitors in the rating I needed.

P o w e r s u p p l y : : :  :    :     .

3x 470uF x 35V axial capacitors

2x 1000uF x 35V axial capacitors

1x 4700uF x 16V axial capacitor

3x LM723CN chips (not sure if these need replacing, but they are 33 years old and replacements are $0.65 each.)

Polymoog 203A joins the fleet and queue for repair

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Few synthesizers have such a bi-polar reputation.  Amazing sounding and tedious to maintain, much less restore are the two poles of this equation.  Moog churned out a few of these – I am guessing a little over 3000 since they started with 1001 and this fellow is serial number 4021.  The reference to the latest one I’ve found is 4141.  Gary Numan famously used the Polymoog (280a I think – Vox Humana most recognizably) and so did a list of other luminaries if VSE is correct, but there isn’t anyone recent on that list.  I’m excited to fix this to see what it can do in a modern setting.IMG_6922

It just happens sometimes.  You mention you have an X you are looking to get rid of, and a friend says they have a Y they’d like to get rid of.  A little cash one way or the other sweetens the deal.  In such a way this complete, clean, low mileage, semi-functional Polymoog joined the menagerie.

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