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Roland MKB-300

Released in 1985

The MKB-300 is a 76-note MIDI controller with weighted keys.

Synth
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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.

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Roland MKB-300 replacement keys
Replacement Keys
AC power socket, 2-blade
AC power socket, 2-blade
$14.95 (Part #4415)
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Bender assembly, Roland
Bender assembly, Roland
$49.95 (Part #1474)
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Bender/modulation panel, Roland
Bender/modulation panel, Roland
$26.95 (Part #10118)
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Button, black, Roland
Button, black, Roland
$5.95 (Part #10115)
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Button, clear, Roland
Button, clear, Roland
$7.95 (Part #1930)
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Button, gray, Roland
Button, gray, Roland
$5.95 (Part #10116)
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CPU board, Roland
CPU board, Roland
$149.95 (Part #10110)
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Display bezel, Roland
Display bezel, Roland
$12.95 (Part #10117)
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Display board, Roland
Display board, Roland
$18.95 (Part #10106)
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Jack board, Roland
Jack board, Roland
$59.95 (Part #10120)
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Key bushing, rubber
Key bushing, rubber
$0.95 (Part #4327)
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Key contact board, High, Roland
Key contact board, High, Roland
$69.95 (Part #10113)
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Key contact board, Low, Roland
Key contact board, Low, Roland
$29.95 (Part #10108)
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Key contact board, Mid, Roland
Key contact board, Mid, Roland
$69.95 (Part #10109)
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Key return spring, Roland
Key return spring, Roland
For white keys
$0.95 (Part #KYSP20)
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Key return spring, Roland
Key return spring, Roland
For black keys
$0.95 (Part #KYSP21)
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LED board, Roland
LED board, Roland
$10.95 (Part #10114)
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Panel board, left, Roland
Panel board, left, Roland
$41.95 (Part #10112)
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Panel board, right, Roland
Panel board, right, Roland
$39.95 (Part #10111)
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Pedal, damper-style
Pedal, damper-style
$34.95 (Part #VFP115)
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Phone jack, 1/4-inch, 3-pin PCB mount
Phone jack, 1/4-inch, 3-pin PCB mount
For all rear panel jacks
$12.95 (Part #4546)
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Power cord, 2-blade
Power cord, 2-blade
$15.95 (Part #PCJ)
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Power supply board, Roland
Power supply board, Roland
$51.95 (Part #10119)
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Power switch, rocker type
Power switch, rocker type
$6.95 (Part #4289)
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Pushbutton tact switch
Pushbutton tact switch
$8.95 (Part #3568)
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Slide potentiometer, 10KB, 20mm
Slide potentiometer, 10KB, 20mm
For bender panel sliders
$19.95 (Part #1475)
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Slide switch cap, Roland
Slide switch cap, Roland
For Protect
$6.95 (Part #2261)
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Slide switch, 12-position
For Transpose
$19.95 (Part #1476)
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Slider knob, Roland
Slider knob, Roland
For bender panel sliders
$7.95 (Part #4293)
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Slider knobs, set of 10, Roland
Slider knobs, set of 10, Roland
For bender panel sliders
$44.95 (Part #4293X)
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Style 53W key, black note
Style 53W key, black note
$9.95 (Part #K53WBL)
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Style 53W key, bottom E note
Style 53W key, bottom E note
$16.95 (Part #K53WEB)
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Style 53W key, note A
Style 53W key, note A
$10.95 (Part #K53WA)
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Style 53W key, note B
$10.95 (Part #K53WB)
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Style 53W key, note C
$10.95 (Part #K53WC)
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Style 53W key, note D
$10.95 (Part #K53WD)
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Style 53W key, note E
$10.95 (Part #K53WE)
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Style 53W key, note F
$10.95 (Part #K53WF)
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Style 53W key, note G
$10.95 (Part #K53WG)
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Style 53W key, top G note
$16.95 (Part #K53WGT)
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Transformer, Roland
Transformer, Roland
$47.95 (Part #10107)
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Transistor, 2SC1815
Transistor, 2SC1815
$2.95 (Part #1943)
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