Roland JD-990
Released in 1993The JD-990 is a two-rack-space synthesizer module with 24-voice polyphony.

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.

AC power socket
$11.95 (Part #2257)
Click for details
$11.95 (Part #2257)

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

Button, with LED window, Roland
$3.95 (Part #7590)
Click for details
$3.95 (Part #7590)

Button, without LED window, Roland
$3.95 (Part #7591)
Click for details
$3.95 (Part #7591)

Display, Roland
$79.95 (Part #1689)
Click for details
$79.95 (Part #1689)

Encoder
$16.95 (Part #1323)
Click for details
$16.95 (Part #1323)

Encoder knob, Roland
$10.95 (Part #2043)
Click for details
$10.95 (Part #2043)

Knob, rotary, Roland
For Volume
$12.95 (Part #3920)
Click for details
For Volume
$12.95 (Part #3920)

MIDI jacks assembly
$12.95 (Part #3435)
Click for details
$12.95 (Part #3435)

Phone jack, 1/4-inch, 4-pin PCB mount
For Phones
$10.95 (Part #5049)
Click for details
For Phones
$10.95 (Part #5049)

Phone jack, 1/4-inch, 4-pin PCB mount
For all rear panel jacks
$10.95 (Part #3688)
Click for details
For all rear panel jacks
$10.95 (Part #3688)

Potentiometer, 10KBx2 rotary with switch
For Volume
$17.95 (Part #1324)
Click for details
For Volume
$17.95 (Part #1324)

Power cord
$12.95 (Part #PCD)
Click for details
$12.95 (Part #PCD)

Power switch cap, black, Roland
$9.95 (Part #3697)
Click for details
$9.95 (Part #3697)

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)

Transformer, Roland
$49.95 (Part #1332)
Click for details
$49.95 (Part #1332)

Transistor, DTA124ES
$6.95 (Part #10623)
Click for details
$6.95 (Part #10623)