Yamaha DGX-640

Released in 2008

The DGX-640 is an 88-note portable digital piano with built-in speakers.

Synth
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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.

Yamaha DGX-640 replacement keys
Replacement Keys
Button set, 12-button keypad
Button set, 12-button keypad
$19.95 (Part #6806)
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Button set, 2-buttons
Button set, 2-buttons
For Exit, Function
$6.95 (Part #6805)
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Button set, 2-buttons
Button set, 2-buttons
For File Control, Execute
$6.95 (Part #6802)
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Button set, 2-buttons
Button set, 2-buttons
$6.95 (Part #6809)
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Button set, 3-buttons
Button set, 3-buttons
For Split, Dual, Harmony
$7.95 (Part #6804)
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Button set, 3-buttons, gray
Button set, 3-buttons, gray
For Waiting, Your Tempo, Minus One
$9.95 (Part #6803)
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Button set, 4-buttons, gray
Button set, 4-buttons, gray
For Score, Lyrics
$9.95 (Part #6807)
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Button set, 5-buttons
Button set, 5-buttons
For Port. Grand, Style, Song, Voice, Music Database
$16.95 (Part #6798)
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Button set, 5-buttons, dark gray
Button set, 5-buttons, dark gray
For Regist Memory, Bank 1-4
$16.95 (Part #6799)
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Button set, 6-buttons
Button set, 6-buttons
For R/1, L/2 3, 4, 5, A
$17.95 (Part #6801)
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Button set, 8-buttons, dark gray
Button set, 8-buttons, dark gray
$16.95 (Part #6797)
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Button, white, Yamaha
Button, white, Yamaha
For Demo/BGM, Rec
$3.95 (Part #6808)
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Contact strip, 12-note, Yamaha
Contact strip, 12-note, Yamaha
$14.95 (Part #CS3468)
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Contact strip, 4-note
Contact strip, 4-note
$12.95 (Part #CS3467)
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Corner panel, left
Corner panel, left
$21.95 (Part #6783)
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Corner panel, right
Corner panel, right
$21.95 (Part #6784)
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Digital jack board
Digital jack board
$24.95 (Part #6816)
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Display, LCD, Yamaha
Display, LCD, Yamaha
$159.95 (Part #3653)
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Encoder
Encoder
$11.95 (Part #3465)
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Encoder board, Yamaha
Encoder board, Yamaha
$19.95 (Part #10687)
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Encoder knob, Yamaha
Encoder knob, Yamaha
$7.95 (Part #6800)
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Hammer weight, black key #1, Yamaha
Hammer weight, black key #1, Yamaha
$6.95 (Part #6790)
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Hammer weight, black key #2, Yamaha
Hammer weight, black key #2, Yamaha
$6.95 (Part #6791)
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Hammer weight, black key #3, Yamaha
Hammer weight, black key #3, Yamaha
$6.95 (Part #6792)
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Hammer weight, black key #4, Yamaha
Hammer weight, black key #4, Yamaha
$6.95 (Part #6793)
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Hammer weight, white key #1, Yamaha
Hammer weight, white key #1, Yamaha
$6.95 (Part #6786)
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Hammer weight, white key #2, Yamaha
Hammer weight, white key #2, Yamaha
$6.95 (Part #6787)
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Hammer weight, white key #3, Yamaha
Hammer weight, white key #3, Yamaha
$6.95 (Part #6788)
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Hammer weight, white key #4, Yamaha
Hammer weight, white key #4, Yamaha
$6.95 (Part #6789)
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IC, LA4625 audio amplifier
IC, LA4625 audio amplifier
$12.95 (Part #6868)
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Key contact board, 24-note (High), Yamaha
Key contact board, 24-note (High), Yamaha
$34.95 (Part #2206)
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Key contact board, 28-note (Low), Yamaha
Key contact board, 28-note (Low), Yamaha
$34.95 (Part #2205)
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Key contact board, 36-note (Mid), Yamaha
Key contact board, 36-note (Mid), Yamaha
$37.95 (Part #2204)
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Keybed cushion, 88-note
Keybed cushion, 88-note
$7.95 (Part #1430)
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Keybed cushion, 88-note
Keybed cushion, 88-note
(Hammers strike against this)
$24.95 (Part #5284)
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Keybed cushion, Yamaha
Keybed cushion, Yamaha
(Hammers rest against this)
$26.95 (Part #5297)
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Keybed, Yamaha
$379.95 (Part #10674)
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Knob, Yamaha
Knob, Yamaha
For Volume
$5.95 (Part #4314)
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Main board, Yamaha
Main board, Yamaha
$289.95 (Part #6796)
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Music rest, Yamaha
Music rest, Yamaha
$29.95 (Part #2065)
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Panel board, left, Yamaha
Panel board, left, Yamaha
$29.95 (Part #6814)
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Panel board, left, Yamaha
Panel board, left, Yamaha
$29.95 (Part #10562)
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Panel board, right, Yamaha
Panel board, right, Yamaha
$24.95 (Part #6815)
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Pedal unit jack board
Pedal unit jack board
$16.95 (Part #6813)
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Phone jack, 1/4-inch, 2-pin PCB mount
Phone jack, 1/4-inch, 2-pin PCB mount
For Sustain
$6.95 (Part #3869)
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Phone jack, 1/4-inch, 7-pin PCB mount
Phone jack, 1/4-inch, 7-pin PCB mount
$7.95 (Part #3634)
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Pitch bend assembly
Pitch bend assembly
$18.95 (Part #6794)
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Pitch bend wheel spring, Yamaha
Pitch bend wheel spring, Yamaha
$4.95 (Part #6294)
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Pitch bend/mod wheel, Yamaha
Pitch bend/mod wheel, Yamaha
$7.95 (Part #2322)
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Potentiometer, 10KB rotary
Potentiometer, 10KB rotary
For Contrast
$6.95 (Part #3683)
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Potentiometer, 10KB rotary
Potentiometer, 10KB rotary
For Pitch Bend wheel
$6.95 (Part #4164)
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Potentiometer, 5KAx2 rotary
Potentiometer, 5KAx2 rotary
For Volume
$6.95 (Part #5897)
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Power adapter, 12VDC, 2A
Power adapter, 12VDC, 2A
$29.95 (Part #PA1003)
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Power inlet jack
Power inlet jack
$5.45 (Part #3062)
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Power switch assembly, Yamaha
Power switch assembly, Yamaha
$16.95 (Part #6818)
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Power switch cap, black, round
Power switch cap, black, round
$4.95 (Part #5701)
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Power switch, pushbutton
Power switch, pushbutton
$11.95 (Part #2176)
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Power/jack board
Power/jack board
$39.95 (Part #6795)
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Right top end panel
Right top end panel
$12.95 (Part #6785)
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Speaker grille
Speaker grille
$9.95 (Part #6782)
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Speaker, tweeter assembly, Yamaha
Speaker, tweeter assembly, Yamaha
$9.95 (Part #6817)
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Speaker, Yamaha
Speaker, Yamaha
$27.95 (Part #6838)
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Style 64T key, textured black keys
$17.95 (Part #K64TBL)
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Style 64U key, bottom A note
$9.95 (Part #K64UAB)
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Style 64U key, lowest B note
$9.95 (Part #K64UBB)
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Style 64U key, top C note
$9.95 (Part #K64UC8)
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Style 64U keys, C-E-G-B group
Style 64U keys, C-E-G-B group
$13.95 (Part #K64UC)
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Style 64U keys, D-F-A group
Style 64U keys, D-F-A group
$12.95 (Part #K64UD)
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USB board, Yamaha
USB board, Yamaha
$11.95 (Part #6839)
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USB connector
USB connector
$6.95 (Part #3487)
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