Roland RD-300
Released in 1987The RD-300 is an 88-note electronic piano.

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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

AC power socket, 2-blade
$14.95 (Part #4415)
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$14.95 (Part #4415)

Button, gray, with LED window, Roland
$6.95 (Part #1290)
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$6.95 (Part #1290)

Button, with LED window, Roland
$5.95 (Part #1289)
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$5.95 (Part #1289)

Cheek block, Roland
For right or left
$8.95 (Part #9318)
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For right or left
$8.95 (Part #9318)

Contact strip, 4-note
$11.95 (Part #6310)
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$11.95 (Part #6310)

Contact strip, 7-note
$16.95 (Part #1302)
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$16.95 (Part #1302)

Contact strip, 8-note
$16.95 (Part #1301)
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$16.95 (Part #1301)

CPU-B board, Roland RD
$62.95 (Part #8641)
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$62.95 (Part #8641)

Effects/jack board, Roland RD
$69.95 (Part #8637)
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$69.95 (Part #8637)

Encoder, rotary
For Tune
$16.95 (Part #1125)
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For Tune
$16.95 (Part #1125)

Fuse board, Roland
$9.95 (Part #8634)
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$9.95 (Part #8634)

IC, 4584 hex Schmitt trigger
$6.95 (Part #8981)
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$6.95 (Part #8981)

IC, C4570HA dual op amp, SIP
$3.95 (Part #6624)
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$3.95 (Part #6624)

IC, MN3007 BBD chip
$21.95 (Part #2587)
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$21.95 (Part #2587)

IC, MN3101 BBD clock driver
$7.95 (Part #5084)
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$7.95 (Part #5084)

Knob, rotary, Roland
For Tune
$7.95 (Part #2188)
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For Tune
$7.95 (Part #2188)

MIDI jack, female
$9.95 (Part #5325)
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$9.95 (Part #5325)

Panel board, Roland RD
$59.95 (Part #8636)
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$59.95 (Part #8636)

Phone jack, 1/4-inch, 3-pin PCB mount
For Phones
$10.95 (Part #4178)
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For Phones
$10.95 (Part #4178)

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

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

Power cord, 2-blade
$15.95 (Part #PCJ)
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$15.95 (Part #PCJ)

Power supply board, Roland RD
$44.95 (Part #8638)
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$44.95 (Part #8638)

Power switch, rocker type
$5.95 (Part #4289)
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$5.95 (Part #4289)

Pushbutton tact switch, 5mm, 4-pin with ground
$1.95 (Part #1175)
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$1.95 (Part #1175)

Rubber foot, 3/8-inch tall
$1.45 (Part #4295)
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$1.45 (Part #4295)

Slide potentiometer, 100KB, 30mm
For Tremolo Rate
$24.95 (Part #6383)
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For Tremolo Rate
$24.95 (Part #6383)

Slide potentiometer, 10KA, 30mm
For Tremolo Depth
$24.95 (Part #3658)
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For Tremolo Depth
$24.95 (Part #3658)

Slide potentiometer, 10KAx2, 30mm
For Internal Volume
$24.95 (Part #3811)
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For Internal Volume
$24.95 (Part #3811)

Slide potentiometer, 10KB, 30mm
For Lower, Upper External Volume
$26.95 (Part #1426)
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For Lower, Upper External Volume
$26.95 (Part #1426)

Slide potentiometer, 10KBx2, 30mm
For Brilliance
$24.95 (Part #1340)
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For Brilliance
$24.95 (Part #1340)

Slide switch, 3-position
For Level
$16.95 (Part #2592)
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For Level
$16.95 (Part #2592)

Slider knob, Roland
$6.95 (Part #1135)
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$6.95 (Part #1135)

Style 85W key, black note
$10.95 (Part #K85WBL)
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$10.95 (Part #K85WBL)

Style 85W key, bottom A note
$16.95 (Part #K85WAB)
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$16.95 (Part #K85WAB)

Style 85W key, note A
$12.95 (Part #K85WA)
Click for details
$12.95 (Part #K85WA)

Style 85W key, note B
$12.95 (Part #K85WB)
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$12.95 (Part #K85WB)

Style 85W key, note C
$12.95 (Part #K85WC)
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$12.95 (Part #K85WC)

Style 85W key, note D
$12.95 (Part #K85WD)
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$12.95 (Part #K85WD)

Style 85W key, note E
$12.95 (Part #K85WE)
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$12.95 (Part #K85WE)

Style 85W key, note F
$12.95 (Part #K85WF)
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$12.95 (Part #K85WF)

Style 85W key, note G
$12.95 (Part #K85WG)
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$12.95 (Part #K85WG)

Style 85W key, top C note
$16.95 (Part #K85WC8)
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$16.95 (Part #K85WC8)

Transistor, 2SC1740
$1.95 (Part #7502)
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$1.95 (Part #7502)