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Products for the Moog
Opus 3
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 Moog keyboards, so you will need to make sure you order the correct style (click on the link for your keyboard below). With the exception of the Top C note, all keys from octave to octave are identical, and all black keys within a given style 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.

If you do not know the note names, the illustration below shows the notes of a 3-1/2 octave keyboard.

Moog Keyboard Notes


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Opus 3


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.

Opus 3
Diode Circuit board #1 (Part #2265)
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Diode Diode, for control board CR1-CR15, key contact board (Part #3788)
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Felt Key Cushion Felt key cushion, lower (Part #4795)
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Fuse Holder Fuse holder (Part #3629)
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Moog Integrated Circuit IC, 3046 transistor array (Part #3306)
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Moog Integrated Circuit IC, 3080 op amp (Part #3298)
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Moog IC Chip IC, 4001 quad NOR gate (Part #3304)
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Integrated Circuit IC, 4007 dual FET/inverter (Part #3738)
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Integrated Circuit IC, 40106 Hex Schmitt trigger (Part #2128)
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Integrated Circuit IC, 4027 dual flip-flop (Part #1263)
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Integrated Circuit IC, 4053 multiplexer switch (Part #3413)
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Integrated Circuit IC, 4069 hex inverter (Part #3994)
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Integrated Circuit IC, 4558 dual op amp (Part #3387)
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Moog IC IC, 741 op amp (Part #3297)
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Integrated Circuit IC, E402 dual N-channel FET (Part #2131)
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Integrated Circuit IC, LF353N dual op amp (Part #2090)
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Integrated Circuit IC, LM348N quad op amp (Part #5032)
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Integrated Circuit IC, LM358 dual op amp (Part #2130)
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Moog Opus 3 Key Bushing Key bushing, rubber (Part #4269)
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Moog Opus 3 Key Contact Assembly Key contact assembly, 6-note (Part #3596)
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Moog Opus 3 Key Contact Assembly Key contact assembly, 7-note (Part #3595)
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Moog Key Return Spring Key return spring (Part #KYSP24)
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Moog Opus-3 Knob Knob, green face (Part #3608)
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Moog Opus-3 Knob Knob, orange face (Part #3606)
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Moog Opus-3 Knob Knob, silver face (Part #4374)
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Moog Opus-3 Knob Knob, yellow face (Part #3607)
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Moog Phone Jack Phone jack, for Stereo Outputs (Part #4623)
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Moog Pitch Bend Assembly Pitch bend assembly (Part #3625)
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Moog Pitch Bend/Mod Wheel Pitch bend wheel (Part #3620)
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Moog Opus 3 Potentiometer Potentiometer, for Mixer section (Part #3602)
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Moog Opus 3 Potentiometer Potentiometer, for pitch bender (Part #3649)
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Moog Opus 3 Potentiometer Potentiometer, dual, for Master Gain (Part #3600)
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Moog Opus 3 Power Cord Power cord (Part #PC)
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Moog Opus 3 Power Switch Power switch (Part #3611)
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Moog Opus 3 Rubber Foot Rubber foot (Part #4475)
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Moog Opus 3 Slide Potentiometer Slide potentiometer, 10KA, for Modulation Amt, Organ Footage Mix (Part #3358)
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Moog Opus 3 Slide Potentiometer Slide potentiometer, 10KB, for all Mix and L-R sliders, Articulator Release, Chorus Depth, VCF Sustain, Contour Amt, CF, and Emph (Part #4482)
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Moog Opus 3 Slide Potentiometer Slide potentiometer, 10KBx2, for Strings Freq and Res (Part #3623)
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Moog Opus 3 Slide Potentiometer Slide potentiometer, 1MA, for Articulator Attack, Modulation Rate and Delay, VCF Attack (Part #4483)
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Moog Opus 3 Slide Potentiometer Slide potentiometer, 1MAx2, for Organ Tone, VCF Decay (Part #3624)
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Moog Slider Knob Slider knob, green face (Part #3367)
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Moog Slider Knob Slider knob, orange face (Part #3609)
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Moog Slider Knob Slider knob, yellow face (Part #3368)
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Moog Opus 3 Panel Switch Switch, 2-position (Part #1551)
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Moog Opus 3 Panel Switch Switch, 3-position (Part #4484)
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Moog Opus 3 Transformer Transformer (Part #3610)
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Transistor Transistor, 2N3904 (Part #5176)
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Transistor Transistor, 2N3906 (Part #6032)
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Moog Voltage Regulator Voltage regulator, 78M12 (Part #2147)
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Moog Voltage Regulator Voltage regulator, 79M12 (Part #2028)
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Moog Opus 3 Wiring Harness Wiring harness (Part #3605)
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