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Products for the Sequential Circuits
Prophet 600
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 61-note 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


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Prophet 600


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.


Prophet 600
Sequential Circuits Prophet-600 Power Socket AC power socket (Part #3022)
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Sequential Circuits Prophet-600 Battery Battery (Part #4128)
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Sequential Circuits Prophet-600 Bubble Contact Strip Bubble contact strip, 6-note (Part #4350)
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Sequential Circuits Prophet-600 Bubble Contact Strip Bubble contact strip, 7-note (Part #4349)
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Sequential Circuits Fuse Holder Fuse holder (Part #4014)
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Integrated Circuit IC, 4013 flip-flop (Part #3322)
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Integrated Circuit IC, 4016 quad analog switch (Part #3302)
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Integrated Circuit IC, 4049 hex inverter/buffer (Part #2382)
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Integrated Circuit IC, 4051 multiplexer (Part #4319)
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Integrated Circuit IC, 4053 multiplexer switch (Part #3413)
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Sequential Circuits Prophet-600 IC IC, 4174 flip-flop (Part #3305)
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Integrated Circuit IC, 4503 tri-state hex buffer (Part #3045)
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Integrated Circuit IC, 74C32N quad 2-input OR gate (Part #2971)
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Integrated Circuit IC, 74LS00 quad gate (Part #3429)
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Integrated Circuit IC, 74LS04 hex inverter (Part #3147)
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Integrated Circuit IC, 74LS138 decoder/demultiplexer (Part #3251)
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Integrated Circuit IC, 74LS32 quad gate (Part #4262)
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Integrated Circuit IC, 74LS74 dual flip-flop (Part #3396)
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Integrated Circuit IC, CEM3310 envelope generator (Part #3716)
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Integrated Circuit IC, CEM3340 oscillator chip (Part #3926)
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Curtis 3360 VCA Chip IC, CEM3360 VCA chip (Part #4063)
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Integrated Circuit IC, CEM3372 VCF/VCA (Part #1832)
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Integrated Circuit IC, LM311 comparator (Part #2560)
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Integrated Circuit IC, PC900 optocoupler chip (Part #3704)
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Integrated Circuit IC, TL072 op amp (Part #3388)
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Integrated Circuit IC, TL081 op amp (Part #4260)
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Integrated Circuit IC, TL082 op amp (Part #3423)
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Sequential Circuits Six-Trak Key Bushing Key bushing, rubber (Part #4269)
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Sequential Circuits Prophet-600 Key Spring Key return spring (Part #KEYSP8)
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Sequential Circuits Prophet-600 Knob Knob (Part #4735)
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MIDI Jack MIDI jack (Part #5132)
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Sequential Circuits Prophet-600 Phone Jack Nut Nut, for 1/4-inch phone jack (Part #4301)
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Sequential Circuits Prophet-600 Phone Jack Phone jack, for Audio Out only (Part #4990)
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Sequential Circuits Prophet-600 Phone Jack Phone jack, for all except Audio Out (Part #4989)
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Sequential Circuits Prophet-600 Potentiometer Potentiometer (Part #4745)
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Sequential Circuits Prophet 600 Power Cord Power cord (Part #PC)
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Sequential Circuits Prophet 600 Power Switch Power switch (Part #4020)
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Sequential Circuits Prophet 600 Rubber Foot Rubber foot (Part #4021)
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Transistor Transistor, 2N3904 (Part #5176)
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Voltage Regulator Voltage regulator, 7805 (Part #2256)
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Voltage Regulator Voltage regulator, 78L05 (Part #2339)
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Voltage Regulator Voltage regulator, 7905 (Part #2255)
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