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


 

Replacement Keys
These keys will replace broken ones on your keyboard. There are several different types of keys used on the GEM 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 (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.

Generalmusic Keyboard Notes

Click below to view keys for:
S3


 

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.

S2, S3
GEM AC Power Socket AC power socket (Part #2024)
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GEM Battery Battery, for S2 (Part #1974)
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GEM Battery Battery, for S3 (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, for S3 (Part #8079)
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GEM Button Set Button set, keypad, for S3(Part #8080)
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GEM Curcuit Board Circuit board 315053, for S3 (Part #8084)
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Contact Spring Holder Contact spring holder, for S3 (Part #8082)
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Diode Diode, 1N4148 (Part #3788)
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Disk Drive Disk drive, for S3 (Part #8093)
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LCD Display Display with inverter board, for S3 (Part #8092)
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Display Surround Display surround, for S3 (Part #8095)
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Encoder Knob Encoder knob with ball bearings, for S3 (Part #8081)
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End Cap End cap, right, for S3 (Part #8097)
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End Cap End cap, left, for S3 (Part #8098)
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Headphone Jack Assembly Headphone jack assembly, for S3 (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, TL072 op amp (Part #3388)
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Integrated Circuit IC, TL074 op amp (Part #3714)
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Jack Board Jack board, for S3 (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, for S3 (Part #8075)
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Key Contact Board Key contact board, 44-note, for S3 (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), for S3 (Part #8072)
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Keybed Circuit Board Keybed circuit board, shorter (315058), for S3 (Part #8073)
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GEM Rotary Knob Knob, rotary (Part #2019)
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Main Board Main board, for S3 (Part #8076)
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Panel Board Panel board, for S3 (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, for S3 (Part #8094)
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Pitch Bend/Mod Wheel Assembly Pitch bend/mod wheel assembly, for S3 (Part #8083)
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Pitch Bend/Mod Wheel Panel Pitch bend/mod wheel panel, for S3 (Part #8096)
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Pitch Bend Wheel Spring Pitch bend wheel spring, for S3 (Part #8086)
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Power Supply Board Power supply board, for S3 (Part #8078)
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Power Switch Power switch (Part #6010)
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GEM Tact Switch Pushbutton tact switch, for S3 (Part #4572)
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Tact Switch Pushbutton tact switches, set of 10, for S3 (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, for S3, main to jack board (Part #8087)
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Ribbon Cable, 20-in, 34 pin Ribbon cable, for S3, 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, for S3, key bed to jack board (Part #8089)
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Ribbon Cable, 8-in, 12 pin Ribbon cable, for S3, left panel to jack board (Part #8090)
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Ribbon Cable, 2.5-in, 9 pin Ribbon cable, for S3, power to main board (Part #8091)
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Ribbon Cable, 11-in, 12 pin Ribbon cable, for S3, 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, for S3 (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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