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Products for the Crumar
Bit One, Bit 01, Bit 99
Replacement Keys - Parts
Keyboard Service Center


Replacement Keys
With the exception of the Top C note, 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:
Bit One   Bit 99


Bit One
Crumar Power Socket AC power socket/line filter (Part #4015)
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Crumar Bit One Battery Battery (Part #4424)
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Crumar Bit One Panel Button Button, black with no LED hole (Part #3065)
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Crumar Bit One Panel Button Button, black with LED hole (Part #3066)
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Crumar Bit One Panel Buttons Button set, numbers 0 through 9 (Part #3067)
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Crumar Bit One Display Board Display board (Part #3064)
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Crumar Bit One Fuse Holder Fuse holder (Part #4014)
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Integrated Circuit IC, 1458 dual op amp (Part #3685)
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Integrated Circuit IC, 4011 quad gate (Part #3391)
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Integrated Circuit IC, 4016 quad analog switch (Part #3302)
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Integrated Circuit IC, 4028 decoder (Part #1945)
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Integrated Circuit IC, 4049 hex inverter/buffer (Part #2382)
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Integrated Circuit IC, 4050 hex buffer/converter (Part #1775)
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Integrated Circuit IC, 4051 multiplexer (Part #4319)
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Integrated Circuit IC, 4070 quad OR gate (Part #5172)
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Integrated Circuit IC, 4520 dual binary up counter (Part #2696)
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Integrated Circuit IC, 741 op amp (Part #3297)
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Integrated Circuit IC, 74LS00 quad gate (Part #3429)
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Integrated Circuit IC, 74LS138 decoder/demultiplexer (Part #3251)
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Integrated Circuit IC, 74LS139 decoder/demultiplexer (Part #4263)
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Integrated Circuit IC, 74LS374 flip-flop (Part #4215)
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Integrated Circuit IC, CEM3328 filter chip (Part #4039)
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Integrated Circuit IC, LM13700 dual op amp (Part #5106)
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Integrated Circuit IC, LM393 comparator (Part #3660)
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Integrated Circuit IC, SSM2044 filter chip (Part #3720)
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Integrated Circuit IC, TL072 op amp (Part #3388)
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Integrated Circuit IC, TL081 op amp (Part #4260)
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Integrated Circuit IC, TL082 op amp (Part #3423)
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Crumar Bit One Key Return Spring Key return spring (Part #KEYSP1)
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Crumar Bit One Key Return Springs Key return springs, set of 10 (Part #KEYSP1X)
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Crumar Bit One Power Cord Power cord (Part #PC)
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Crumar Bit One Slide Potentiometer Slide potentiometer, 5KB (Part #3071)
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Crumar Bit One Slide Potentiometer Slide potentiometer, 20KB (Part #3072)
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Crumar Bit One Slider Dust Cover Slider dust cover (Part #3070)
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Crumar Bit One Slider Knob Slider knob (Part #3073)
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Crumar Bit One Panel Switch Switch, for front panel (Part #3068)
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Crumar Bit One Panel Switch Switch, with LED, for front panel (Part #3069)
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Bit 99
Crumar AC Receptacle AC line filter/cord receptacle (Part #4015)
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Crumar Battery Battery (Part #4347)
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Bridge Rectifier Bridge rectifier, WO2M (Part #5145)
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Crumar Contact Spring Holder Contact spring holder (Part #1516)
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Fuse Holder Fuse holder (Part #4014)
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Integrated Circuit IC, 1458 dual op amp (Part #3685)
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Integrated Circuit IC, 4016 quad analog switch (Part #3302)
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Integrated Circuit IC, 4049 hex inverter/buffer (Part #2382)
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Integrated Circuit IC, 4050 hex buffer/converter (Part #1775)
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Integrated Circuit IC, 4051 multiplexer (Part #4319)
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Integrated Circuit IC, 4520 dual binary up counter (Part #2696)
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Integrated Circuit IC, 74LS00 quad gate (Part #3429)
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Integrated Circuit IC, 74LS138 decoder/demultiplexer (Part #3251)
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Integrated Circuit IC, 74LS139 decoder/demultiplexer (Part #4263)
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Integrated Circuit IC, 74LS373 flip-flop (Part #3051)
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Integrated Circuit IC, 74LS374 flip-flop (Part #4215)
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Integrated Circuit IC, 74LS393 dual binary counter (Part #5225)
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Integrated Circuit IC, CEM3328 filter chip (Part #4039)
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Integrated Circuit IC, LM13700 dual op amp (Part #5106)
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Integrated Circuit IC, LM393 comparator (Part #3660)
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Integrated Circuit IC, SSM2044 filter chip (Part #3720)
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Integrated Circuit IC, TL072 op amp (Part #3388)
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Integrated Circuit IC, TL081 op amp (Part #4260)
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Integrated Circuit IC, TL082 op amp (Part #3423)
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Crumar Key Contact Spring Key contact spring (Part #1459)
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Crumar Bit One Key Return Spring Key return spring (Part #KEYSP1)
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Crumar Bit One Key Return Springs Key return springs, set of 10 (Part #KEYSP1X)
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Crumar Nut for Phone Jack Nut for phone jack (Part #4446)
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Crumar Phone Jack Phone jack, all except Release and Phones (Part #2805)
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Crumar Power Cord Power cord (Part #PC)
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Crumar Bit 99 Slider Knob Slider knob (Part #1030)
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Voltage Regulator Voltage regulator, 7805 (Part #2256)
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Voltage Regulator Voltage regulator, 7812 (Part #1861)
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Voltage Regulator Voltage regulator, 7912 (Part #1739)
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