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Products for the Alesis
QuadraSynth
Replacement Keys - Parts
Keyboard Service Center



Replacement Keys
With the exception of the Bottom E and Top G notes, all keys from octave to octave are identical, and all black keys are identical. *Note that the Quadrasynth used two different types of keybeds; some Quadrasynths used fully weighted keys, and others used half-weighted keys. Please refer to our key photos to determine which your keyboard uses.


Parts
We stock both NEW and USED parts; all used electronic parts are tested and guaranteed working.

This listing reflects our current inventory and is updated in real time. If a part has no Buy button and shows Out of Stock, it is typically out of production and we don't know when or if we might have it again. By including out of stock parts in our listings, we hope to offer customers a more complete and useful resource.

We cannot diagnose repair issues by phone or email. For technical questions, we suggest posting on our Forums, where our techs - as well as other users - can offer help.


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 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, Pots 1-4 (Part #3299)
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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 ROM Board ROM expansion board, for Piano Plus (Part #5540)
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Alesis QS6 Rubber Foot Rubber foot (Part #4439)
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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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