Yamaha PSR-400
Released in 1991The PSR-400 Portatone is a 61-note consumer keyboard with built-in speakers.

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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.

Replacement Keys

Battery cover, Yamaha
$9.95 (Part #5290)
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$9.95 (Part #5290)

Button set, 2 buttons, Yamaha
For MIDI
$3.95 (Part #7871)
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For MIDI
$3.95 (Part #7871)

Button set, 2 buttons, Yamaha
For Custom, Song Memory
$4.95 (Part #7865)
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For Custom, Song Memory
$4.95 (Part #7865)

Button set, 3 buttons, Yamaha
For Demo
$4.95 (Part #7876)
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For Demo
$4.95 (Part #7876)

Button set, 5 buttons, Yamaha
For Voice Memory
$6.95 (Part #7862)
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For Voice Memory
$6.95 (Part #7862)

Button set, 5 buttons, Yamaha
For Orchestration, Song Memory
$6.95 (Part #7867)
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For Orchestration, Song Memory
$6.95 (Part #7867)

Button set, 8 arrows, Yamaha
For Accomp Volume, Transpose, Tuning, Tempo
$6.95 (Part #7868)
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For Accomp Volume, Transpose, Tuning, Tempo
$6.95 (Part #7868)

Button set, 8 buttons, Yamaha
For Accompaniment Control
$7.95 (Part #7860)
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For Accompaniment Control
$7.95 (Part #7860)

Button set, numbers, Yamaha
For Style Select, Voice Select
$8.95 (Part #7866)
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For Style Select, Voice Select
$8.95 (Part #7866)

Button, black, Yamaha
For Auto Harmony, Dual Voice
$3.95 (Part #7873)
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For Auto Harmony, Dual Voice
$3.95 (Part #7873)

Button, large, Yamaha
For Play/Stop
$3.95 (Part #7875)
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For Play/Stop
$3.95 (Part #7875)

Button, small, Yamaha
For Split Point Change
$3.95 (Part #7874)
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For Split Point Change
$3.95 (Part #7874)

Contact strip, 1-note, Yamaha
$7.95 (Part #3374)
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$7.95 (Part #3374)

Contact strip, 12-note, Yamaha
$12.95 (Part #3373)
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$12.95 (Part #3373)

Display bezel, Yamaha
$6.95 (Part #7859)
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$6.95 (Part #7859)

IC, 74HC00 quad 2-input NAND gate
$1.95 (Part #8391)
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$1.95 (Part #8391)

IC, 74HC04 hex buffer
$2.95 (Part #2272)
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$2.95 (Part #2272)

IC, PC900 optocoupler
$2.95 (Part #3704)
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$2.95 (Part #3704)

Key contact board, Yamaha
$49.95 (Part #7878)
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$49.95 (Part #7878)

Keybed cushion, 61-note
$9.95 (Part #1059)
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$9.95 (Part #1059)

Keybed MKS board, Yamaha
$19.95 (Part #7854)
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$19.95 (Part #7854)

LED bezel, Yamaha
$0.95 (Part #7877)
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$0.95 (Part #7877)

LED board, Yamaha
$19.95 (Part #7853)
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$19.95 (Part #7853)

Music rest, Yamaha
$29.95 (Part #1804)
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$29.95 (Part #1804)

Phone jack, 1/4-inch, 3-pin PCB mount
For Foot Switch
$10.95 (Part #4334)
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For Foot Switch
$10.95 (Part #4334)

Phone jack, 1/4-inch, 7-pin PCB mount
For Phones/Output
$10.95 (Part #3634)
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For Phones/Output
$10.95 (Part #3634)

Pitch bend wheel assembly, Yamaha
$17.95 (Part #7857)
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$17.95 (Part #7857)

Power adapter, 12VDC, 2A
$29.95 (Part #PA1003)
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$29.95 (Part #PA1003)

Power inlet jack
$5.95 (Part #3062)
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$5.95 (Part #3062)

Rubber foot, self-adhesive
$1.95 (Part #3433)
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$1.95 (Part #3433)

Slider knob, Yamaha
$3.95 (Part #6760)
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$3.95 (Part #6760)

Speaker, Yamaha, 4.5 inch
$12.95 (Part #9620)
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$12.95 (Part #9620)

Style 59U key, top C note
$9.95 (Part #K59UC8)
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$9.95 (Part #K59UC8)

Style 59U keys, black notes group
$12.95 (Part #K59UBL)
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$12.95 (Part #K59UBL)

Style 59U keys, C-E-G-B group
$13.95 (Part #K59UC)
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$13.95 (Part #K59UC)

Style 59U keys, D-F-A group
$12.95 (Part #K59UD)
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$12.95 (Part #K59UD)

Transistor, 2SC2603E
$7.95 (Part #10009)
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$7.95 (Part #10009)

Volume slider board, Yamaha
$12.95 (Part #7858)
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$12.95 (Part #7858)