Syntaur Productions
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Products for the Sequential Circuits
Pro-One
Replacement Keys - Parts
Keyboard Service Center


Replacement Keys
These plastic keys will replace broken ones on your keyboard. Most of these replacement keys are used, but in fine condition; some are new. There are several different types of keys used on the SCI keyboards, so you will need to make sure you order the correct style. With the exception of the Top C note, all keys from octave to octave are identical, and all black keys are identical. In other words, a B note in the lowest octave uses the same key as a B note in any other octave. But the highest C note is different from the other C notes (see illustration below).

If you do not know the note names, on the keyboard shown below, the white keys from the bottom (left side) up are: C, D, E, F, G, A, B, and then the sequence repeats.

Sequential Circuits Synth Notes


Click below to view keys for:
Pro-One (J-wire type)


Parts
We stock both new and used parts; the individual item descriptions will specify whether a part is NEW or USED. All used electronic parts are tested and guaranteed working. This listing reflects our current inventory and is updated daily, so if a part is shown with a "Buy" button, we should have it in stock.

If a part is shown as Out of Stock, then we do not have it, and in most cases, we don't know when or even if we might have it again. Your best bet is to simply check back on our site occasionally. If a part is not listed on our site, then we do not carry that part. We can no longer research or special order parts that are not listed here, and we just don't have time to answer questions about parts that we don't carry.

We want to help you get the parts you need, but please do not ask us to help diagnose problems with your equipment. We simply don't have the resources to do this, and it is just not practical to diagnose repair issues without being able to test the equipment in person.


Pro-One
Fuse Holder Fuse holder, black (Part #2292)
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Fuse Holder Fuse holder, red (Part #5040)
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Fuse Holder Cap Fuse holder, cap only, red (Part #5048)
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Integrated Circuit IC, 4049 hex inverter/buffer (Part #2382)
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Integrated Circuit IC, CA3280 transconductance amp (Part #6091)
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Integrated Circuit IC, CEM3310 envelope generator (Part #3716)
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Integrated Circuit IC, CEM3320 filter (Part #3717)
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Integrated Circuit IC, CEM3340 oscillator chip (Part #3926)
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Integrated Circuit IC, LM348N quad op amp (Part #5032)
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Integrated Circuit IC, NE5532N dual op amp (Part #5196)
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Integrated Circuit IC, TL072 op amp (Part #3388)
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Arp J-wire guide J-wire guide (Part #3182)
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Sequential Circuits Pro-One Key Bushing Key bushing (Part #4169)
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Key Bushing Kit Key bushing kit (Part #416937)
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Sequential Circuits Pro-One Key Return Spring Key return spring, white key, for Pro-One using Style 17U (J-wire) keys (Part #KYSP17)
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Sequential Circuits Pro-One Key Return Spring Key return spring, black key, for Pro-One using Style 17U (J-wire) keys (Part #KEYSPM)
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Sequential Circuits Pro-One Knob Knob (Part #4735)
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Sequential Circuits Name Badge Name badge, small "Sequential Circuits" (Part #4803)
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Sequential Circuits Pro-One Phone Jack Phone jack, for Audio In and Audio Out only (Part #4990)
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Sequential Circuits Pro-One Phone Jack Phone jack, for all except Audio In and Audio Out (Part #4989)
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Sequential Circuits Potentiometer Potentiometer, pitch or mod wheel (Part #5764)
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Sequential Circuits Pro-One Power Switch Power switch (Part #4020)
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Ribbon Cable Ribbon cable, to keybed (Part #1425)
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Sequential Circuits Pro-One Rubber Foot Rubber foot (Part #4021)
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Sequential Circuits Pro-One Rotary Switch Rotary switch, for Oscillator Octave settings (Part #4988)
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Sequential Circuits Pro-One Transformer Transformer (Part #4977)
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Voltage Regulator Voltage regulator, 78M15 (Part #4412)
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Voltage Regulator Voltage regulator, 7905 (Part #2255)
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Voltage Regulator Voltage regulator, 79M15 (Part #2415)
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