Yamaha CS70M

Released in 1981

The CS70M is a powerful 6-voice polysynth with two VCOs per voice, two LFOs, two 2-pole filters per voice, and envelopes for both the VCA and VCFs. The 5-octave keyboard is aftertouch-sensitive, and there is also a built-in 4-track sequencer.

Synth
All photos are copyrighted by Syntaur, and may not be used without permission.

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.

Yamaha CS70M replacement keys
Replacement Keys
AC power socket
AC power socket
$3.95 (Part #3022)
Click for details
Contact strip, 61-note
Contact strip, 61-note
$39.95 (Part #4537)
Click for details
IC, 4001 quad NOR gate
IC, 4001 quad NOR gate
$2.95 (Part #3304)
Click for details
IC, 4011 quad gate
IC, 4011 quad gate
$2.95 (Part #3391)
Click for details
IC, 4013 flip-flop
IC, 4013 flip-flop
$2.95 (Part #3322)
Click for details
IC, 4016 quad analog switch
IC, 4016 quad analog switch
$2.95 (Part #3302)
Click for details
IC, 40174 flip-flop (replaces 14174)
IC, 40174 flip-flop (replaces 14174)
$2.95 (Part #3305)
Click for details
IC, 4028 decoder
IC, 4028 decoder
$2.95 (Part #1945)
Click for details
IC, 4049 hex inverter/buffer
IC, 4049 hex inverter/buffer
$2.95 (Part #2382)
Click for details
IC, 4066 quad bilateral switch
IC, 4066 quad bilateral switch
$2.95 (Part #3723)
Click for details
IC, 4071 quad 2-input OR gate
IC, 4071 quad 2-input OR gate
$2.95 (Part #2716)
Click for details
IC, 4503 tri-state hex buffer
IC, 4503 tri-state hex buffer
$2.95 (Part #3045)
Click for details
IC, 4558 dual op amp
IC, 4558 dual op amp
$2.95 (Part #3387)
Click for details
IC, 74LS00N quad gate
IC, 74LS00N quad gate
$2.95 (Part #3429)
Click for details
IC, 74LS04 hex inverter
IC, 74LS04 hex inverter
$2.95 (Part #3147)
Click for details
IC, 74LS05 hex inverter
IC, 74LS05 hex inverter
$2.95 (Part #8114)
Click for details
IC, 74LS08N quad gate
IC, 74LS08N quad gate
$2.95 (Part #3394)
Click for details
IC, 74LS138 decoder/demultiplexer
IC, 74LS138 decoder/demultiplexer
$3.95 (Part #3251)
Click for details
IC, 74LS139 decoder/demultiplexer
IC, 74LS139 decoder/demultiplexer
$2.95 (Part #4263)
Click for details
IC, 74LS14N hex Schmitt trigger
IC, 74LS14N hex Schmitt trigger
$2.95 (Part #4420)
Click for details
IC, 74LS174 flip-flop
IC, 74LS174 flip-flop
$2.95 (Part #3149)
Click for details
IC, 74LS32N quad gate
IC, 74LS32N quad gate
$2.95 (Part #4262)
Click for details
IC, 74LS367 buffer/line driver
IC, 74LS367 buffer/line driver
$3.95 (Part #4224)
Click for details
IC, 74LS374 flip-flop
IC, 74LS374 flip-flop
$2.95 (Part #4215)
Click for details
IC, 74LS393 dual binary counter
IC, 74LS393 dual binary counter
$3.95 (Part #5225)
Click for details
IC, 74LS74 dual flip-flop
IC, 74LS74 dual flip-flop
$2.95 (Part #3396)
Click for details
IC, MN3009 BBD
IC, MN3009 BBD
$21.95 (Part #1663)
Click for details
IC, Yamaha IG00153 VCO
IC, Yamaha IG00153 VCO
$79.95 (Part #8340)
Click for details
Key return spring, Yamaha
Key return spring, Yamaha
$0.75 (Part #KEYSPX)
Click for details
Key return springs, package of 10
Key return springs, package of 10
$4.95 (Part #KEYSPXX)
Click for details
Knob, ivory face, Yamaha
Knob, ivory face, Yamaha
$7.95 (Part #9844)
Click for details
Pitch bend/mod wheel rubber, Yamaha
Pitch bend/mod wheel rubber, Yamaha
$2.95 (Part #7122)
Click for details
Potentiometer, 10KB rotary
Potentiometer, 10KB rotary
For Tune, Detune, Speed, Fine
$9.95 (Part #3356)
Click for details
Power cord
Power cord
$7.95 (Part #PC)
Click for details
Slider knob, ivory, Yamaha
Slider knob, ivory, Yamaha
$9.95 (Part #9847)
Click for details
Style 24U key, black note
$9.95 (Part #K24UBL)
Click for details
Style 24U key, note A
$10.95 (Part #K24UA)
Click for details
Style 24U key, note B or E
$10.95 (Part #K24UBE)
Click for details
Style 24U key, note C or F
$10.95 (Part #K24UCF)
Click for details
Style 24U key, note D
$10.95 (Part #K24UD)
Click for details
Style 24U key, note G
$10.95 (Part #K24UG)
Click for details
Style 24U key, top C note
$16.95 (Part #K24UC8)
Click for details
Transistor, 2SA1015
Transistor, 2SA1015
$1.95 (Part #3294)
Click for details
Transistor, 2SC1815
Transistor, 2SC1815
$2.95 (Part #1943)
Click for details
Transistor, 2SK30A-O
Transistor, 2SK30A-O
$3.95 (Part #2605)
Click for details