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Yamaha CS40M

Released in 1979

The CS40M is rather like two CS20M's combined - it is a 2-voice polyphonic (duophonic) synthesizer, with two VCOs per voice, and with a filter switchable between low-pass, band-pass, and high-pass. This 44-note analog synthesizer has 20 locations for storing user programs.

Yamaha CS40M
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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 is shown as Out of Stock, we typically don't know when or if we might have it again - but click on the part for more info, and then you will be able to sign up for an alert when we do have it available 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.

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AC power socket
AC power socket
$5.95 (Part #3022)
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Diode, 1N34A
Diode, 1N34A
$3.95 (Part #5166)
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IC, 4011 quad gate
IC, 4011 quad gate
$2.95 (Part #3391)
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IC, 4013 flip-flop
IC, 4013 flip-flop
$2.95 (Part #3322)
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IC, 4016 quad analog switch
IC, 4016 quad analog switch
$2.95 (Part #3302)
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IC, 4028 decoder
IC, 4028 decoder
$2.95 (Part #1945)
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IC, 4030 quad exclusive OR gate
IC, 4030 quad exclusive OR gate
$3.95 (Part #3303)
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IC, 4049 hex inverter/buffer
IC, 4049 hex inverter/buffer
$2.95 (Part #2382)
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IC, 4050 hex buffer/converter
IC, 4050 hex buffer/converter
$2.95 (Part #1775)
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IC, 4069 hex inverter
IC, 4069 hex inverter
$2.95 (Part #3994)
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IC, 4069 hex inverter
IC, 4069 hex inverter
$2.95 (Part #3994)
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IC, 4071 quad 2-input OR gate
IC, 4071 quad 2-input OR gate
$2.95 (Part #2716)
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IC, 4081 quad AND gate
IC, 4081 quad AND gate
$2.95 (Part #10659)
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IC, 4558 dual op amp
IC, 4558 dual op amp
$2.95 (Part #3387)
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IC, TA7505M op amp
IC, TA7505M op amp
$14.95 (Part #5083)
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IC, UA310HC op amp/voltage follower
IC, UA310HC op amp/voltage follower
$9.95 (Part #8901)
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IC, Yamaha IG00153 VCO
IC, Yamaha IG00153 VCO
$79.95 (Part #8340)
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IC, YM617 multiplexer replacement
IC, YM617 multiplexer replacement
$42.95 (Part #7259)
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Key return spring, Yamaha
Key return spring, Yamaha
$0.75 (Part #KEYSPX)
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Key return springs, package of 10
Key return springs, package of 10
$6.95 (Part #KEYSPXX)
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Knob, ivory face, Yamaha
Knob, ivory face, Yamaha
For Pitch knobs, Brilliance, Initial Level, Output knobs
$7.95 (Part #9844)
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Pedal, damper-style
Pedal, damper-style
For Sustain, Porta
$36.95 (Part #VFP115)
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Potentiometer, 10KA rotary
Potentiometer, 10KA rotary
For LFO Mod Depth, all Mixer and Output pots, VCA 1 and 2
$11.95 (Part #6864)
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Potentiometer, 10KB rotary
Potentiometer, 10KB rotary
For VCO Pitch, PWM Depth; all LFO, Ring Mod, VCF pots; VCA Depth, Initial Level
$9.95 (Part #3356)
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Power cord, IEC
Power cord, IEC
$8.95 (Part #PC)
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Slide potentiometer, 10KB, 30mm
Slide potentiometer, 10KB, 30mm
For EG-VCF Sustain, EG-VCA Sustain
$17.95 (Part #4482)
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Slide switch, 2-position
Slide switch, 2-position
$14.95 (Part #2461)
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Slide switch, 3-position
Slide switch, 3-position
$16.95 (Part #2462)
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Style 24U key, black note
Style 24U key, black note
$9.95 (Part #K24UBL)
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Style 24U key, note A
Style 24U key, note A
$11.95 (Part #K24UA)
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Style 24U key, note B or E
Style 24U key, note B or E
$11.95 (Part #K24UBE)
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Style 24U key, note C or F
Style 24U key, note C or F
$11.95 (Part #K24UCF)
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Style 24U key, note D
Style 24U key, note D
$11.95 (Part #K24UD)
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Style 24U key, note G
Style 24U key, note G
$11.95 (Part #K24UG)
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Style 24U key, top C note
Style 24U key, top C note
$17.95 (Part #K24UC8)
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Syntaur control voltage pedal
Syntaur control voltage pedal
For Filter Foot Control
$89.95 (Part #CVP100)
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Transistor, 2SA1015
Transistor, 2SA1015
$1.95 (Part #3294)
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Transistor, 2SA490
Transistor, 2SA490
$7.95 (Part #8976)
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Transistor, 2SB507 or NTE153 or 2SB1015
Transistor, 2SB507 or NTE153 or 2SB1015
$3.95 (Part #2577)
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Transistor, 2SC1815
Transistor, 2SC1815
$2.95 (Part #1943)
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Transistor, 2SD235
Transistor, 2SD235
$6.95 (Part #8900)
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Transistor, NTE152 or 2N5294
Transistor, NTE152 or 2N5294
$5.95 (Part #7371)
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Transistor, NTE398
Transistor, NTE398
$5.95 (Part #7374)
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