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Products for the Alesis
QuadraSynth, QS Series, QSR
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 Alesis 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.

Alesis Synth Notes

Click below to view keys for:
QuadraSynth (half-weighted keys)   QuadraSynth (weighted keys)
QS6   QS6.1   QS7   QS7.1   QS8   QS8.1   QS8.2


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.

View parts for:
QuadraSynth   QS Series   QSR  


QuadraSynth
Alesis AC Connector AC power inlet (Part #4135)
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Alesis QuadraSynth AC Power Inlet AC power inlet (Part #5551)
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Alesis QS Battery Battery (Part #4425)
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Alesis QuadraSynth Button Assembly Button assembly, smaller buttons (Part #5552)
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Alesis QuadraSynth Button Assembly Button assembly, 2 larger buttons (Part #5553)
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Alesis QuadraSynth Button Assembly Button assembly, 4 larger buttons (Part #5554)
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Alesis QuadraSynth Button Assembly Button assembly, 5 larger buttons (Part #5555)
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Alesis QuadraSynth Button Board Button board (Part #5539)
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Alesis QuadraSynth Contact Strip Contact strip, 1-note (Part #4883)
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Alesis QuadraSynth Contact Strip Contact strip, 3-note (Part #5296)
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Alesis QS Contact Strip Contact strip, 4-notes (Part #4157)
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Alesis QS Contact Strip Contact strip, 8-notes (Part #4159)
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Alesis QS Contact Strip Contact strip, 12-notes (Part #4156)
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Alesis QS Contact Strip Contact strip, 13-notes (Part #4158)
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Alesis QuadraSynth Display Assembly Display assembly, for QuadraSynth Plus Piano (Part #5543)
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Alesis QuadraSynth Display Bezel Display bezel (Part #5550)
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Integrated Circuit IC, 6N138 optocoupler (Part #2892)
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Alesis Key Bushing Key bushing, lower (white keys only) (Part #4175)
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Alesis Key Bushing Key bushing, upper (Part #4174)
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Alesis Key Contact Board Key contact board, 32-note (Part #4206)
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Alesis Key Contact Board Key contact board, 44-note (Part #4205)
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Alesis Key Spring Key return spring (Part #KEYSP3)
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Alesis QuadraSynth Knob Knob (Part #5545)
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Alesis QuadraSynth Volume Knob Knob, for Volume (Part #5544)
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Alesis QuadraSynth Main Board Main board (Part #5527)
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Alesis QuadraSynth Mod Wheel Assembly Mod wheel assembly (Part #5547)
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Alesis Nut for Phone Jack Nut for phone jack (Part #4446)
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Alesis QuadraSynth Panel Board Panel board (Part #5537)
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Alesis PCMCIA Card Slot Surround PCMCIA Card Slot Surround (Part #6384)
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Alesis Phone Jack Phone jack, all except Headphones (Part #2805)
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Alesis QuadraSynth ROM Expansion Board Piano Plus ROM expansion board (Part #5540)
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Alesis QuadraSynth Pitch Bend / Mod Wheel Pitch bend/mod wheel (Part #5546)
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Alesis QuadraSynth Pitch Bend Wheel Assembly Pitch bend wheel assembly (Part #5548)
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Alesis QuadraSynth Pitch Ben Wheel Spring Pitch bend wheel spring (Part #5549)
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Alesis QuadraSynth Potentiometer Potentiometer, for Volume (Part #3299)
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Alesis Potentiometer Potentiometer, for pitch bend wheel (Part #3479)
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Alesis QuadraSynth Potentiometer Assembly Potentiometer (Volume) assembly (Part #5541)
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Alesis Power Switch Power switch (Part #3249)
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Tact Switch Pushbutton tact switch (Part #4572)
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Tact Switch Pushbutton tact switches, set of 10 (Part #4572X)
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Alesis Ribbon Cable Ribbon cable, main board to display (Part #4428)
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Alesis QS6 Rubber Foot Rubber foot (Part #4439)
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Alesis Slide Potentiometer Slide potentiometer, Data (Part #3578)
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Alesis Slide Potentiometer Slide potentiometer, Volume (Part #2258)
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Alesis QuadraSynth Transformer Board Transformer board (Part #5542)
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Voltage Regulator Voltage regulator, 7805 (Part #2256)
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Voltage Regulator Voltage regulator, 7905 (Part #2255)
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QS Series
Alesis QS Power Inlet AC power inlet, for QS6.1/7/7.1/8/8.1 (Part #3250)
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Alesis QS6 Keyboard Pressure Strip Aftertouch strip, for QS6/6.1 (Part #4450)
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Aftertouch Strip Aftertouch strip, for QS8/8.1 white keys (Part #3262)
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Aftertouch Strip Aftertouch strip, for QS8/8.1 black keys (Part #2025)
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Alesis QS Battery Battery (Part #4425)
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Alesis QS Button Strip Button strip, large, for QS6/7/8 (Part #3095)
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Alesis QS Button Strip Button strip, large, for QS6.1/7.1/8.1 (Part #2110)
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Alesis QS Button Strip Button strip, small, for QS6/6.1/7/7.1/8/8.1 (Part #3096)
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Alesis QuadraSynth Contact Strip Contact strip, 1-note (Part #4883)
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Alesis QuadraSynth Contact Strip Contact strip, 3-note (Part #5296)
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Alesis QS Contact Strip Contact strip, 4-notes (Part #4157)
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Alesis QS Contact Strip Contact strip, 8-notes (Part #4159)
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Alesis QS Contact Strip Contact strip, 12-notes (Part #4156)
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Alesis QS Contact Strip Contact strip, 13-notes (Part #4158)
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Alesis QS LCD Display Display, LCD, for QS6/7/8 (Part #4441)
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Alesis QS LCD Display Display, LCD, for QS6.1/6.2/7.1/8.1/8.2 (Part #2106)
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Alesis QS Display Bezel Display bezel, for QS6/7/8 (Part #4442)
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Alesis QS Display Bezel Display bezel, for QS6.1/7.1/8.1 (Part #2107)
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Alesis QS End Cap End cap, left, for QS6, QS6.1, QS7, QS7.1 (Part #3099)
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Alesis QS End Cap End cap, right, for QS6, QS6.1, QS7, QS7.1 (Part #4430)
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Alesis QS End Cap End cap, left, for QS8/8.1 (Part #3252)
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Alesis QS End Cap End cap, right, for QS8/8.1 (Part #3253)
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Alesis QS Front Panel Front panel, for QS6 (Part #4434)
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Hammer Weight Hammer weight, black key, for QS8 (Part #6027)
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Hammer weight Hammer weight, white key, for QS8 (Part #6026)
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Integrated Circuit IC, EPROM chip, O.S. version 1.01, for QS6 (Part #1298)
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Integrated Circuit IC, EPROM chip, O.S. version 1.02, for QS8 (Part #5895)
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Integrated Circuit IC, 6N138 optocoupler (Part #2892)
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Alesis Key Bushing Key bushing, lower (white keys only), for QS4/6/6.1/7 (Part #4175)
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Alesis Key Bushing Key bushing, upper, for for QS4/6/6.1/7 (Part #4174)
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Alesis QS Keyboard Contact Board Key contact board, low (32-note), for QS6, QS6.1 (Part #4241)
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Alesis QS Keyboard Contact Board Key contact board, high (29-note), for QS6, QS6.1 (Part #4240)
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Alesis QS Keyboard Contact Board Key contact board, 39-note, for QS8/8.1 (Part #2132)
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Alesis QS Keyboard Contact Board Key contact board, 49-note, for QS8/8.1 (Part #2782)
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Alesis Key Pivot Key pivot, for QS8/8.1 (Part #4797)
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Alesis QS Key Spring Key return spring, for QS4/6/6.1/7 (Part #KEYSP3)
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Alesis QS Key Spring Key return spring, for QS8/8.1 (Part #KYSP18)
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Alesis QS6 Keybed Chassis Keybed chassis, for QS6 or QS6.1 (Part #4451)
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Alesis QS Keypad Board Keypad board, for QS6/7/8 (Part #4432)
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Alesis QS Keypad Board Keypad board, for QS6.1/7.1/8.1 (Part #2111)
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Alesis QS Main Board Main board, for QS6 (Part #4431)
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Alesis QS Main Board Main board, for QS6.1 (Part #2115)
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Alesis QS Main Board Main board, for QS8 (Part #3247)
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Alesis QS Main Board Main board, for QS8.1 (Part #2125)
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Alesis QS Mod Wheel Assembly Mod wheel assembly (Part #4437)
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Alesis Nut for Phone Jack Nut for phone jack (Part #4446)
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Alesis PCMCIA Card Slot Surround PCMCIA Card Slot Surround, for QS6 (Part #4443)
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Alesis QS Pitch Bend Wheel Assembly Pitch bend wheel assembly (Part #4436)
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Alesis QS Pitch/Mod Wheel Bezel Pitch/mod wheel bezel, for QS6/7/8 (Part #4435)
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Alesis Potentiometer Potentiometer, rotary, for pitch bend wheel* (Part #3479)
*This pot has solder lugs instead of pins, but you can snip off the lugs then straighten the pins to make it fit.

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Alesis QS AC Power Adapter Power adapter, for QS6/QSR (Part #3063)
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Alesis QS Power Cord Power cord, for QS6.1, QS7 or QS8 (Part #PC)
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Alesis QS8 Power Switch Power switch, for QS6.1/7/7.1/8/8.1 (Part #3249)
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Alesis QS6 Power Switch Cap Power switch cap, for QS6 (Part #4444)
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Alesis Ribbon Cable Ribbon cable, for key contact boards, QS8/8.1 (Part #2276)
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Alesis QS Ribbon Cable Ribbon cable, main board to display, for QS6/7/8 (Part #4428)
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Alesis QS Ribbon Cable Ribbon cable, main board to display, for QS6.1 (Part #2124)
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Alesis QS Ribbon Cable Ribbon cable, main board to display, for QS8.1 (Part #2123)
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Alesis QS6 Ribbon Cable Ribbon cable, main board to keyboard (lower), for QS6 (Part #4448)
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Alesis QS8 Ribbon Cable Ribbon cable, main board to keyboard, for QS8 (Part #6418)
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Alesis QS6 Ribbon Cable Ribbon cable, main board to keyboard (upper), for QS6 (Part #4449)
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Alesis Ribbon Cable Ribbon cable, main board to keyboard, for QS6.1 (Part #2116)
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Alesis Ribbon Cable Ribbon cable, 17-inch, main board to keyboard, for QS8/8.1 (Part #2126)
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Alesis QS Ribbon Cable Ribbon cable, main board to keypad board, QS6/6.1/7/7.1/8/8.1 (Part #4230)
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Alesis QS6 Rubber Foot Rubber foot (Part #4439)
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Alesis Machine Screws Screws, for QS8.1 keybed (Part #2122)
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Alesis Slide Potentiometer Slide potentiometer, Data (Part #3578)
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Alesis Slide Potentiometer Slide potentiometer, Volume (Part #2258)
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Alesis QS6 Slider PCB Slider board, for QS6 (Part #4438)
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Alesis QS8 Slider PCB Slider board, for QS6.1/7/7.1/8/8.1 (Part #3248)
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Alesis QS Slider Knob Slider knob, for QS6 (Part #4445)
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Slider Knob Slider knob, for QS6.2/8.2 (Part #4776)
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Alesis QS Slider Knob Slider knob, for QS6.1/7/7.1/8/8.1 (Part #3255)
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Alesis QS6 Slider Surround Slider surround, for QS6 (Part #4440)
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Alesis QS8 Slider Surround Slider surround, for QS6.1/7/7.1/8/8.1 (Part #3254)
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Alesis Transformer Board Transformer board, for QS6.1/7/7.1/8/8.1 (Part #3246)
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Voltage Regulator Voltage regulator, 7805 (Part #2256)
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Voltage Regulator Voltage regulator, 7905 (Part #2255)
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QSR
Alesis QSR LCD Display Display, LCD, for QSR (Part #2106)
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Alesis Phone Jack Phone jack (Part #2805)
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