Yamaha PSR-740
Released in 1999The PSR-740 Portatone is a 61-note consumer keyboard with built-in speakers.

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.

Replacement Keys

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

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

DIN socket, 8-pin
To Host
$6.95 (Part #1972)
Click for details
To Host
$6.95 (Part #1972)

Display assembly, Yamaha
For upper display
$159.95 (Part #2320)
Click for details
For upper display
$159.95 (Part #2320)

Display backlight, Yamaha
For upper display
$69.95 (Part #1808)
Click for details
For upper display
$69.95 (Part #1808)

Encoder
$11.95 (Part #3465)
Click for details
$11.95 (Part #3465)

Key contact board, 27-note (High), Yamaha
$24.95 (Part #6479)
Click for details
$24.95 (Part #6479)

Key contact board, 34-note (Low), Yamaha
$29.95 (Part #6478)
Click for details
$29.95 (Part #6478)

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

Keyboard controller board, Yamaha
$29.95 (Part #6475)
Click for details
$29.95 (Part #6475)

Knob, black, Yamaha
For Master Volume
$7.95 (Part #3181)
Click for details
For Master Volume
$7.95 (Part #3181)

Knob, Yamaha
For Input Volume
$7.95 (Part #2032)
Click for details
For Input Volume
$7.95 (Part #2032)

Music rest, Yamaha
$29.95 (Part #3436)
Click for details
$29.95 (Part #3436)

Phone jack, 1/4-inch, 2-pin PCB mount
For Aux Out (L, L+R)
$10.95 (Part #3869)
Click for details
For Aux Out (L, L+R)
$10.95 (Part #3869)

Phone jack, 1/4-inch, 3-pin PCB mount
For Aux Out R, Sustain
$10.95 (Part #4334)
Click for details
For Aux Out R, Sustain
$10.95 (Part #4334)

Phone jack, 1/4-inch, 7-pin PCB mount
For Phones, Foot Volume, Mic/Line In
$10.95 (Part #3634)
Click for details
For Phones, Foot Volume, Mic/Line In
$10.95 (Part #3634)

Pitch bend/mod wheel, Yamaha
$8.95 (Part #2322)
Click for details
$8.95 (Part #2322)

Potentiometer, 10KAx2 rotary
For Master Volume
$9.95 (Part #4163)
Click for details
For Master Volume
$9.95 (Part #4163)

Potentiometer, 10KB rotary
For Pitch Bend, Modulation
$8.95 (Part #4164)
Click for details
For Pitch Bend, Modulation
$8.95 (Part #4164)

Power inlet jack
$5.95 (Part #3062)
Click for details
$5.95 (Part #3062)

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

Power switch, pushbutton
$11.95 (Part #2176)
Click for details
$11.95 (Part #2176)

Pushbutton tact switch, 5mm, 2-pin
$1.95 (Part #4478)
Click for details
$1.95 (Part #4478)

Pushbutton tact switches, 5mm, pkg of 10
$11.95 (Part #4478X)
Click for details
$11.95 (Part #4478X)

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

Speaker
$34.95 (Part #1807)
Click for details
$34.95 (Part #1807)

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

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

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

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