Roland EP-50
Released in 1985The EP-50 is a 76-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)

Bridge rectifier, WO-02S
$3.95 (Part #5145)
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$3.95 (Part #5145)

Contact strip, 12-note
$19.95 (Part #1666)
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$19.95 (Part #1666)

Contact strip, 4-note
$12.95 (Part #1664)
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$12.95 (Part #1664)

Contact strip, 8-note
$15.95 (Part #1665)
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$15.95 (Part #1665)

IC, 4013 flip-flop
$2.95 (Part #3322)
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$2.95 (Part #3322)

IC, 4050 hex buffer/converter
$2.95 (Part #1775)
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$2.95 (Part #1775)

IC, 4558 dual op amp
$2.95 (Part #3387)
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$2.95 (Part #3387)

IC, 74LS00N quad gate
$2.95 (Part #3429)
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$2.95 (Part #3429)

IC, 74LS05 hex inverter
$2.95 (Part #8114)
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$2.95 (Part #8114)

IC, 74LS174 flip-flop
$2.95 (Part #3149)
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$2.95 (Part #3149)

IC, 74LS373 flip-flop
$2.95 (Part #3051)
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$2.95 (Part #3051)

IC, 74LS74 dual flip-flop
$2.95 (Part #3396)
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$2.95 (Part #3396)

IC, LA4440 audio amplifier
$9.95 (Part #2603)
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$9.95 (Part #2603)

IC, MN3009 BBD
$21.95 (Part #1663)
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$21.95 (Part #1663)

IC, MN3101 BBD clock driver
$9.95 (Part #5084)
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$9.95 (Part #5084)

IC, TC40H138 decoder/demultiplexer
$16.95 (Part #2661)
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$16.95 (Part #2661)

IC, TC5517APL static CMOS RAM
$10.95 (Part #3393)
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$10.95 (Part #3393)

IC, TL072 op amp
$2.95 (Part #3388)
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$2.95 (Part #3388)

IC, TLP552 optocoupler
$4.95 (Part #9845)
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$4.95 (Part #9845)

Key bushing, rubber
$0.69 (Part #4327)
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$0.69 (Part #4327)

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

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

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

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

Pushbutton tact switch
$8.95 (Part #3568)
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$8.95 (Part #3568)

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

Slider knob, Roland
$9.95 (Part #1477)
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$9.95 (Part #1477)

Style 53W key, black note
$9.95 (Part #K53WBL)
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$9.95 (Part #K53WBL)

Style 53W key, note A
$10.95 (Part #K53WA)
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$10.95 (Part #K53WA)

Style 53W key, note B
$10.95 (Part #K53WB)
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$10.95 (Part #K53WB)

Style 53W key, note C
$10.95 (Part #K53WC)
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$10.95 (Part #K53WC)

Style 53W key, note D
$10.95 (Part #K53WD)
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$10.95 (Part #K53WD)

Style 53W key, note E
$10.95 (Part #K53WE)
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$10.95 (Part #K53WE)

Style 53W key, note F
$10.95 (Part #K53WF)
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$10.95 (Part #K53WF)

Style 53W key, note G
$10.95 (Part #K53WG)
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$10.95 (Part #K53WG)

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

Voltage regulator, 7805
$2.95 (Part #2256)
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$2.95 (Part #2256)

Voltage regulator, 7815
$3.95 (Part #2321)
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$3.95 (Part #2321)

Voltage regulator, 7915
$3.95 (Part #3415)
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$3.95 (Part #3415)