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Products for the Sequential Circuits
Prophet 5 & Prophet 10
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


Click below to view keys for:
Prophet 5   Prophet 10


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 5, Prophet 10
Sequential Circuits Power Socket AC power socket (Part #3022)
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Sequential Circuits Prophet V (Prophet 5) Battery Battery (Part #4128)
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Buss Bar Support Buss bar support (Part #3807)
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Connectors Connectors and wiring harness (Part #5755)
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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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Heat Sink Heat sink panel (Part #5756)
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Integrated Circuit IC, ver 9.7 EPROM (Part #1162)
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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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Sequential Circuits Multiplexer Chip IC, 4051 multiplexer chip (Part #4319)
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Integrated Circuit IC, 4066 quad bilateral switch (Part #3723)
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Sequential Circuits IC IC, 4174 flip-flop (Part #3305)
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Sequential Circuits IC IC, 4503 tri-state hex buffer (Part #3045)
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Integrated Circuit IC, 4556 dual op amp (Part #6858)
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Integrated Circuit IC, 723C linear regulator (Part #3428)
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Integrated Circuit IC, 741 op amp (Part #3297)
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Integrated Circuit IC, 74HC4051 multiplexer switch (Part #3301)
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Integrated Circuit IC, 74LS00 quad gate (Part #3429)
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Integrated Circuit IC, 74LS02 quad NOR gate (Part #1757)
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Integrated Circuit IC, 74LS08 quad gate (Part #3394)
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Integrated Circuit IC, 74LS138 decoder/demultiplexer (Part #3251)
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Integrated Circuit IC, 74LS74 dual flip-flop (Part #3396)
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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, D444C SRAM chip (Part #1891)
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Integrated Circuit IC, IM6508 SRAM chip (Part #5338)
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Integrated Circuit IC, LM311 comparator (Part #2560)
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Integrated Circuit IC, LM339 quad comparator (Part #2733)
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Integrated Circuit IC, LM348N quad op amp (Part #5032)
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Integrated Circuit IC, MM5837N noise source (Part #5369)
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Integrated Circuit IC, SSM2030 VCO (Prophet 5 Rev 1 and 2 only) (Part #3719)
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Integrated Circuit IC, SSM2030 VCO with tempco (Prophet 5 Rev 1 and 2 only) (Part #3719T)
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IC Chip IC, SSM2040 VCF (Prophet 5 Rev 1 and 2 only) (Part #2543)
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IC Chip IC, SSM2050 envelope generator (Prophet 5 Rev 1 and 2 only) (Part #2542)
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Integrated Circuit IC, TL072 op amp (Part #3388)
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Integrated Circuit IC, TL082 op amp (Part #3423)
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Paia J-wire guide J-wire guide (Part #3182)
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Sequential Circuits Prophet 5 Key Bracket Key bracket, white key (Part #PRKB)
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Sequential Circuits Prophet 5 Key Bracket Key bracket, black key (Part #PRKBB)
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Sequential Circuits Prophet 5 Key Bushing Key bushing (Part #4169)
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Key Bushing Kit Key bushing kit (Part #416961)
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Key Return Spring Key return spring, white key (Part #KYSP17)
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Key Return Spring Key return spring, black key (Part #KEYSPM)
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Keybed Support Bracket Keybed support bracket (Part #3806)
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Sequential Circuits Prophet 5 Knob Knob, black face (Part #4764)
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Sequential Circuits Prophet 5 Knob Knob, silver face (Part #4765)
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Sequential Circuits Name Badge Name badge, large "Prophet 5", for Rev 3.x (Part #4804)
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Sequential Circuits Name Badge Name badge, small "Prophet 5" (Part #4805)
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Sequential Circuits Name Badge Name badge, large "Sequential Circuits" (Part #4802)
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Sequential Circuits Name Badge Name badge, small "Sequential Circuits" (Part #4803)
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Sequential Circuits Prophet 5 Panel Switch Panel switch, black, with LED (Part #4875)
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Sequential Circuits Prophet 5 Panel Switch Panel switch, black, without LED (Part #4969)
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Sequential Circuits Prophet 5 Panel Switch Panel switch, gray, with LED (Part #4876)
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Sequential Circuits Prophet 5 Panel Switch Panel switch, gray, without LED (Part #3082)
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Sequential Circuits Prophet 5 Panel Switch Panel switch, orange, with LED (Part #4877)
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Prophet 5 Pitch Bend Panel Pitch bend/mod wheel panel (Part #5765)
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Sequential Circuits Prophet 5 Potentiometer Potentiometer, front panel (Part #3036)
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Sequential Circuits Potentiometer Shaft Potentiometer shaft, for front panel controls (Part #7201)
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Sequential Circuits Prophet 5 Potentiometer Potentiometer, pitch or mod wheel (Part #2650)
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Sequential Circuits Prophet 5 Power Cord Power cord (Part #PC)
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Sequential Circuits Prophet 5 Ribbon Cable Ribbon cable, 60-pin (Part #4808)
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Ribbon Cable Ribbon cable, to keybed (Part #1425)
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Sequential Circuits Prophet 5 Rubber Foot Rubber foot, for Prophet 5 (Part #4021)
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Sequential Circuits Prophet 10 Rubber Foot Rubber foot, for Prophet 10 (Part #4357)
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Screws Screws, for keytops, pkg of 10 (Part #3923)
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Slide Switch Slide switch, for voltage selector (Part #1549)
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Voltage Regulator Voltage regulator, 7805 (Part #2256)
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Voltage Regulator Voltage regulator, 78M12 (Part #2147)
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Voltage Regulator Voltage regulator, 7905 (Part #2255)
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Voltage Regulator Voltage regulator, LM317 (Part #1841)
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Voltage Regulator Voltage regulator, LM320T (Part #2682)
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Voltage Regulator Voltage regulator, LM337 (Part #2898)
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Voltage Regulator Voltage regulator, LM340T (Part #2681)
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Voltage Regulator Voltage regulator, UA317UC (Part #2673)
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