Yamaha PSR-78
The PSR-78 Portatone is a 49-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 contacts, Yamaha
$8.95 (Part #1215)
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$8.95 (Part #1215)

Button set, Yamaha
$16.95 (Part #1660)
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$16.95 (Part #1660)

Circuit board, XR675, Yamaha
$19.95 (Part #1136)
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$19.95 (Part #1136)

Contact strip, 1-note, Yamaha
$7.95 (Part #CS3191)
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$7.95 (Part #CS3191)

Contact strip, 12-note, Yamaha
$11.95 (Part #CS3190)
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$11.95 (Part #CS3190)

Display, LCD, Yamaha
$19.95 (Part #1521)
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$19.95 (Part #1521)

Key contact board, Yamaha
$41.95 (Part #1132)
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$41.95 (Part #1132)

Knob, black, Yamaha
For Volume
$7.95 (Part #3181)
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For Volume
$7.95 (Part #3181)

Main board, Yamaha PSR-78
$54.95 (Part #1284)
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$54.95 (Part #1284)

Music rest, Yamaha
$29.95 (Part #3980)
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$29.95 (Part #3980)

Panel contact board, Yamaha
$24.95 (Part #1165)
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$24.95 (Part #1165)

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)

Potentiometer, 10KAx2 rotary
For Master Volume
$12.95 (Part #1266)
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For Master Volume
$12.95 (Part #1266)

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

Power switch assembly, Yamaha
$18.95 (Part #1225)
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$18.95 (Part #1225)

Power switch cap, red
$6.95 (Part #1224)
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$6.95 (Part #1224)

Power switch, pushbutton
$11.95 (Part #2176)
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$11.95 (Part #2176)

Speaker, Yamaha
$10.95 (Part #1271)
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$10.95 (Part #1271)

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)

Volume board, Yamaha
$19.95 (Part #1187)
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$19.95 (Part #1187)