Roland HP-3700
Released in 1990The HP-3700 is an 88-note digital home 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)

Battery, 3V lithium
$3.95 (Part #4347)
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$3.95 (Part #4347)

Button, with LED window, Roland
$10.95 (Part #4904)
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$10.95 (Part #4904)

Connector, 8-pin
For Pedal
$9.95 (Part #7416)
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For Pedal
$9.95 (Part #7416)

Contact strip, 1-note, Roland
$2.95 (Part #6520)
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$2.95 (Part #6520)

Contact strip, 12-note
$16.95 (Part #1300)
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$16.95 (Part #1300)

Contact strip, 3-note, Roland
$5.95 (Part #6519)
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$5.95 (Part #6519)

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)

Key contact board, 24-note (Low), Roland/Rhodes
$29.95 (Part #5721)
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$29.95 (Part #5721)

Key contact board, 32-note (High), Roland/Rhodes
$34.95 (Part #5723)
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$34.95 (Part #5723)

Key contact board, 32-note (Mid), Roland/Rhodes
$34.95 (Part #5722)
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$34.95 (Part #5722)

Key guide, white key
$0.45 (Part #5043)
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$0.45 (Part #5043)

Key lock, black key, Roland
$2.95 (Part #5757)
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$2.95 (Part #5757)

Key lock, white key, Roland
$2.95 (Part #5758)
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$2.95 (Part #5758)

Key return spring, Roland
$1.95 (Part #5754)
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$1.95 (Part #5754)

Keybed cushion, 88-note
For lower felts (keys rest against this)
$12.95 (Part #1129)
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For lower felts (keys rest against this)
$12.95 (Part #1129)

Keybed cushion, 88-note
For upper felts (keys press down against this cushion)
$16.95 (Part #1130)
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For upper felts (keys press down against this cushion)
$16.95 (Part #1130)

Knob, rotary, Roland
For Tune
$7.95 (Part #3853)
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For Tune
$7.95 (Part #3853)

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

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

Potentiometer, 10KB rotary
For Tune
$9.95 (Part #1058)
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For Tune
$9.95 (Part #1058)

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

Power switch cap, black
$12.95 (Part #3491)
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$12.95 (Part #3491)

Power switch, pushbutton
$26.95 (Part #3916)
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$26.95 (Part #3916)

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

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

Slide potentiometer, 10KB, 30mm
For Volume, Brilliance
$17.95 (Part #4682)
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For Volume, Brilliance
$17.95 (Part #4682)

Slider knob, Roland
$6.95 (Part #3661)
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$6.95 (Part #3661)

Style 20W key, black note
$12.95 (Part #K20WBL)
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$12.95 (Part #K20WBL)

Style 20W key, bottom A note
$19.95 (Part #K20WAB)
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$19.95 (Part #K20WAB)

Style 20W key, note A
$14.95 (Part #K20WA)
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$14.95 (Part #K20WA)

Style 20W key, note B
$14.95 (Part #K20WB)
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$14.95 (Part #K20WB)

Style 20W key, note C
$14.95 (Part #K20WC)
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$14.95 (Part #K20WC)

Style 20W key, note D
$14.95 (Part #K20WD)
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$14.95 (Part #K20WD)

Style 20W key, note E
$14.95 (Part #K20WE)
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$14.95 (Part #K20WE)

Style 20W key, note F
$14.95 (Part #K20WF)
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$14.95 (Part #K20WF)

Style 20W key, note G
$14.95 (Part #K20WG)
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$14.95 (Part #K20WG)

Style 20W key, top C note
$19.95 (Part #K20WC8)
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$19.95 (Part #K20WC8)

Transistor, DTA124ES
$6.95 (Part #10623)
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$6.95 (Part #10623)