Syntaur Productions
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Products for Yamaha
SY Series
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 Yamaha 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 on the 61-note keyboards, 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 (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.

Yamaha Keyboard Notes

Click below to view keys for:
SY1   SY2   SY22   SY35   SY55   SY77   SY85   SY99


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.

SY Series
Yamaha Aftertouch Sensor Board Aftertouch sensor board, for SY77 (Part #3010)
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Yamaha Aftertouch Sensor Board Aftertouch sensor board, for SY85 (Part #4996)
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Yamaha Aftertouch Strip Aftertouch (key pressure) strip, for SY77 (Part #1659)
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Yamaha Aftertouch Sensor Strip Aftertouch (key pressure) strip, for SY85 (Part #2092)
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Yamaha Aftertouch Strip Aftertouch (key pressure) strip, for SY99 (Part #1837)
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Yamaha Battery Battery, for SY55/77/99 (Part #4311)
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Yamaha Battery Battery, for SY85 (Part #4879)
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Yamaha Disk Drive Belt Belt, for SY77/99 disk drive (Part #3223)
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Yamaha Disk Drive Belt Belt, for SY85 disk drive (Part #3280)
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Yamaha Button Assembly Button assembly, 1-2-3, for SY55 (Part #6305)
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Yamaha Button Assembly Button assembly, 4-5-6, for SY55 (Part #6306)
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Yamaha Button Assembly Button assembly, 7-8-9, for SY55 (Part #6307)
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Yamaha Button Assembly Button assembly, 0 - ENTER, for SY55 (Part #6308)
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Yamaha Button Button, for SY55/77 (Part #5595)
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Yamaha Button Button, large black, for SY85 (Part #4976)
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Yamaha Button Button, small black, for SY85 (Part #4975)
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Yamaha Buttons Button strip, with "A" through "H", for SY85 (Part #4973)
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Yamaha Buttons Button strip, with "1" through "8", for SY85 (Part #4974)
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Yamaha Buttons Button set, cursor, lower, for SY77 (Part #6963)
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Yamaha Buttons Button set, cursor, upper, for SY77 (Part #6962)
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Yamaha Buttons Button set, numeric keypad, for SY77 (Part #6958)
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Yamaha Key Contact Strip Contact strip, for SY22/35/55 (Part #3112)
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Yamaha Cover Plate Cover plate, bottom, for SY85 (Part #5526)
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Yamaha Disk Drive Disk drive, for SY77 (Part #3026)
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Yamaha Display Assembly Display assembly, for SY55 (Part #6304)
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Yamaha Display Display, for SY77/99 (Part #5596)
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Yamaha SY-85 Display Display, for SY85 (Part #4959)
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Yamaha SY-77 Display Bezel Display bezel, for SY77 (Part #5592)
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Yamaha Encoder Knob Encoder knob, for SY77/85/99 (Part #4971)
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Yamaha End Cap End cap, left, for SY55 (Part #6303)
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Yamaha End Cap End cap, right, for SY55 (Part #6302)
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Yamaha End Cap End cap, left, for SY77 (Part #6960)
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Yamaha End Cap End cap, right, for SY77 (Part #6961)
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Integrated Circuit IC, 4556 dual op amp (Part #6858)
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Integrated Circuit IC, 4558 dual op amp (Part #3387)
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Integrated Circuit IC, 4560 dual op amp (Part #3837)
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Integrated Circuit IC, 74F00 quad 2-input NAND gate (Part #5271)
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Integrated Circuit IC, 74HC32 quad logic gate (Part #5246)
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Integrated Circuit IC, 74LS04 hex inverter (Part #3147)
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Integrated Circuit IC, 74LS245 bus transceiver (Part #3395)
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Integrated Circuit IC, 74LS32 quad gate (Part #4262)
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Integrated Circuit IC, PCM56P DAC (Part #4867)
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Yamaha Jack Board Jack board, for SY77 (Part #6959)
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Yamaha SY85 Jack Board Jack board, for SY85 (Part #5524)
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Yamaha SY77 Key Contact Assembly Key contact assembly, 12-note, for SY77/85/99 (Part #4679)
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Yamaha SY77 Key Contact Assembly Key contact assembly, 13-note, for SY77/85/99 (Part #3307)
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Yamaha Key Contact Board Key contact board, for SY22 (Part #1828)
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Yamaha Key Contact Board Key contact board, for SY77 (Part #3774)
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Yamaha Key Retention Clip Key retention clip, for SY77/85/99 (Part #4395)
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Yamaha Key Return Spring Key return spring, for SY22/35/55 (Part #KEYSPK)
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Yamaha Key Return Spring Key return spring, for SY77/85/99 (Part #KEYSPA)
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Yamaha SY-77 Main Board Main board DM1, for SY77 (Part #5587)
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Yamaha SY-77 Main Board Main board DM2, for SY77 (Part #5588)
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Yamaha SY-85 Main Board Main board, for SY85 (Part #4958)
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Yamaha SY-77 Memory Card Board Memory card board, for SY77 (Part #5597)
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Yamaha SY-85 Memory Card Board Memory card board, for SY85 (Part #5525)
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Yamaha Memory Card Guide Memory card guide, for SY77/85 (Part #4970)
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Yamaha Wheel Mod wheel, for SY22/55/77/85/99 (Part #4963)
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Yamaha SY-77 Panel Board Panel board, left, for SY77 (Part #5589)
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Yamaha SY-77 Panel Board Panel board, right, for SY77 (Part #5590)
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Yamaha Panel Board Panel board A (left panel board), for SY85 (Part #4966)
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Yamaha Panel Board Panel board B (right panel board), for SY85 (Part #4967)
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Yamaha Phone Jack Phone jack, for SY22 Headphones, Foot Volume (Part #4178)
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Yamaha Phone Jack Phone jack, for SY22 Left Output (Part #3869)
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Yamaha Phone Jack Phone jack, for SY22 Right Output, Sustain Pedal (Part #4334)
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Yamaha Phone Jack Phone jack, for SY77/85/99 Headphones (Part #4178)
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Yamaha Phone Jack Phone jack, for SY77/85/99 Foot Volume, Foot Cont (Part #4177)
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Yamaha Phone Jack Phone jack, for SY77/99 L/Mono Output, Sustain, Foot Sw (Part #4334)
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Yamaha Phone Jack Phone jack, for SY77/99 Right Output 1/1+2 (Part #3410)
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Yamaha Phone Jack Phone jack, for SY77/85/99 Output 2 L/R (Part #1983)
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Yamaha Phone Jack Phone jack, for SY85 L/Mono Output 1, Sustain (Part #4334)
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Yamaha Pitch Bend Wheel Pitch bend wheel, with spring, for SY22/55/77/85/99 (Part #4962)
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Yamaha Pitch Bend/Mod Wheel Assembly Pitch bend/mod wheel assembly, for SY55 (Part #6309)
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Yamaha Pitch Bend/Mod Wheel Assembly Pitch bend/mod wheel assembly, for SY77 (Part #5593)
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Yamaha Pitch Bend/Mod Wheel Assembly Pitch bend/mod wheel assembly, for SY85 (Part #4964)
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Yamaha Potentiometer Potentiometer, for SY22/55/85 mod wheel (Part #3479)
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Yamaha Potentiometer Potentiometer, for SY55 pitch bend (Part #3750)
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Yamaha Potentiometer Potentiometer, for SY77/99 Contrast (Part #1798)
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Yamaha Potentiometer Potentiometer, for SY77 Click Volume (Part #2646)
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Yamaha Potentiometer Potentiometer, for SY77/99 Mod wheel 1 only (Part #3479)
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Yamaha Potentiometer Potentiometer, for SY77/99 Mod wheel 2 only (Part #3750)
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Yamaha Potentiometer Potentiometer, for SY85 pitch bend (Part #3890)
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Yamaha Power Adapter Power adapter, for SY22/35 (Part #3281)
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Yamaha Power Inlet Jack Power inlet jack, for SY-22 (Part #2216)
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Yamaha SY-77 Power Supply Board Power supply board, for SY77 (Part #5591)
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Yamaha SY-85 Power Supply Power supply, for SY85 (Part #4960)
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Yamaha Power Switch Power switch, for SY77/85/99 (Part #3791)
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Yamaha Switch Cap Power switch cap, for SY55/77/85/99 (Part #3102)
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Yamaha SY Pushbutton Microswitch Pushbutton tact switch (Part #3130)
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Tact Switch Pushbutton tact switches, set of 10 (Part #3130X)
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Yamaha Rubber Foot Rubber foot (Part #4980)
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Yamaha Screws Screws, for SY77 internal chassis (Part #3931)
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Yamaha Slide Potentiometer Slide potentiometer, for SY22/35 Volume (Part #3033)
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Yamaha Slide Potentiometer Slide potentiometer, for SY77/99 Data (Part #3426)
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Yamaha Slide Potentiometer Slide potentiometer, for SY77 Volume (Part #3337)
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Yamaha Slide Potentiometer Slide potentiometer, for SY85/99 Volume (Output 1, 2) (Part #3337)
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Yamaha Slider Knob Slider knob, for SY35/55/77/99 (Part #4950)
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Yamaha Slider Knob Slider knob, for SY85 (Part #4972)
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Spring for Pitch Bend Wheel Spring, for pitch bend wheel (Part #4028)
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Yamaha SY-77 Tansformer Transformer, for SY77 (Part #5594)
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Voltage Regulator Voltage regulator, 78M12 (Part #2147)
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Voltage Regulator Voltage regulator, 79M12 (Part #2028)
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