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Products for GEM
S Series
Replacement Keys - Parts
Keyboard Service Center


 

Replacement Keys
With the exception of the Top C note on the S2, and the Bottom E and Top G notes on the S3, all keys from octave to octave are identical, and all black keys are identical. If you do not know the note names, you can refer to the diagram below.


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.


View parts for:
S2   S3


S2
GEM AC Power Socket AC power socket (Part #2024)
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GEM Battery Battery (Part #1974)
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GEM Button Button, small (Part #2013)
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GEM Button Button, large, with LED window (Part #2014)
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GEM Button Button, Enter/Escape (Part #2023)
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Diode Diode, 1N4148 (Part #3788)
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Integrated Circuit IC, 555 timer (Part #2581)
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Integrated Circuit IC, 6N138 optocoupler (Part #2892)
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Integrated Circuit IC, 74AC138 demultiplexer (Part #1100)
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Integrated Circuit IC, 74HC04 hex inverter (Part #2272)
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Integrated Circuit IC, 74HC32 quad logic gate (Part #5246)
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Integrated Circuit IC, LM311 comparator (Part #2560)
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Integrated Circuit IC, LM324N quad op amp (Part #3715)
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Integrated Circuit IC, LM339 quad comparator (Part #2733)
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Integrated Circuit IC, TL072 op amp (Part #3388)
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GEM Key Bushing Key bushing (Part #4344)
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GEM Key Spring Key return spring (Part #KEYSP3)
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GEM Rotary Knob Knob, rotary (Part #2019)
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Phone Jack Phone jack, for all jacks (Part #4177)
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Power Switch Power switch (Part #6010)
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GEM Signal Relay Relay (Part #4628)
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Ribbon Cable Ribbon cable, 2-inch, for keybed PCBs (Part #4193)
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Ribbon Cable Ribbon cable, main board to display (Part #3868)
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Ribbon Cable Ribbon cable, main board to jack board (Part #4143)
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GEM Slider Potentiometer Slide potentiometer (Part #3034)*
*Slider stem needs to be clipped shorter.

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GEM Slider Knob Slider knob (Part #2017)
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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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S3
GEM AC Power Socket AC power socket (Part #2024)
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GEM Battery Battery (Part #4425)
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GEM Button Button, small (Part #2013)
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GEM Button Button, large, with LED window (Part #2014)
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GEM Button Button, Enter/Escape (Part #2023)
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GEM Button Button, triangular (Part #8079)
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GEM Button Set Button set, keypad (Part #8080)
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GEM Curcuit Board Circuit board 315053 (Part #8084)
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Contact Spring Holder Contact spring holder (Part #8082)
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Diode Diode, 1N4148 (Part #3788)
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Disk Drive Disk drive (Part #8093)
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LCD Display Display with inverter board (Part #8092)
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Display Surround Display surround (Part #8095)
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Encoder Knob Encoder knob with ball bearings (Part #8081)
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End Cap End cap, right (Part #8097)
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End Cap End cap, left (Part #8098)
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Headphone Jack Assembly Headphone jack assembly (Part #8099)
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Integrated Circuit IC, 555 timer (Part #2581)
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Integrated Circuit IC, 6N138 optocoupler (Part #2892)
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Integrated Circuit IC, 74AC138 demultiplexer (Part #1100)
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Integrated Circuit IC, 74HC04 hex inverter (Part #2272)
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Integrated Circuit IC, 74HC32 quad logic gate (Part #5246)
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Integrated Circuit IC, LM311 comparator (Part #2560)
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Integrated Circuit IC, LM324N quad op amp (Part #3715)
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Integrated Circuit IC, LM339 quad comparator (Part #2733)
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Integrated Circuit IC, TL074 op amp (Part #3714)
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Jack Board Jack board (Part #8077)
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GEM Key Bushing Key bushing (Part #4344)
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Key Contact Board Key contact board, 32-note (Part #8075)
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Key Contact Board Key contact board, 44-note (Part #8074)
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GEM Key Spring Key return spring (Part #KEYSP3)
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Keybed Circuit Board Keybed circuit board, longer (315057) (Part #8072)
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Keybed Circuit Board Keybed circuit board, shorter (315058) (Part #8073)
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GEM Rotary Knob Knob, rotary (Part #2019)
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Main Board Main board (Part #8076)
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Panel Board Panel board (Part #8071)
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Phone Jack Phone jack, for all jacks (Part #4177)
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Pitch Bend or Mod Wheel Pitch bend or mod wheel (Part #8094)
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Pitch Bend/Mod Wheel Assembly Pitch bend/mod wheel assembly (Part #8083)
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Pitch Bend/Mod Wheel Panel Pitch bend/mod wheel panel (Part #8096)
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Pitch Bend Wheel Spring Pitch bend wheel spring (Part #8086)
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Power Supply Board Power supply board (Part #8078)
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Power Switch Power switch (Part #6010)
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GEM 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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GEM Signal Relay Relay (Part #4628)
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Ribbon Cable Ribbon cable, 2-inch, for keybed PCBs (Part #4193)
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Ribbon Cable Ribbon cable, main board to display (Part #3868)
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Ribbon Cable Ribbon cable, main board to jack board (Part #4143)
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Ribbon Cable, 5-in, 16 pin Ribbon cable, main to jack board (Part #8087)
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Ribbon Cable, 20-in, 34 pin Ribbon cable, main board to disk drive, main board to right panel board (Part #8088)
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Ribbon Cable, 10-in, 16 pin Ribbon cable, key bed to jack board (Part #8089)
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Ribbon Cable, 8-in, 12 pin Ribbon cable, left panel to jack board (Part #8090)
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Ribbon Cable, 2.5-in, 9 pin Ribbon cable, power to main board (Part #8091)
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Ribbon Cable, 11-in, 12 pin Ribbon cable, keybed to jack board (Part #8100)
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GEM Slider Potentiometer Slide potentiometer (Part #3034)*
*Slider stem needs to be clipped shorter.

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GEM Slider Knob Slider knob (Part #2017)
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Spring Stop Ring Spring stop ring (Part #8085)
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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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