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Roland HP-70

Released in 1981

The HP-70 Piano Plus is a 75-note electronic piano with built-in speakers.

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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Speakers
Transformers
Bridge rectifier, WO-02S
Bridge rectifier, WO-02S
$3.95 (Part #5145)
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Button, ivory, Roland
Button, ivory, Roland
$9.95 (Part #2585)
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Button, lime green, Roland
Button, lime green, Roland
$9.95 (Part #2584)
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Button, orange, Roland
Button, orange, Roland
$14.95 (Part #1359)
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IC, 4558 dual op amp
IC, 4558 dual op amp
$2.95 (Part #3387)
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IC, BA662 Roland VCA chip
IC, BA662 Roland VCA chip
$59.95 (Part #4339)
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IC, LA4440 audio amplifier
IC, LA4440 audio amplifier
$9.95 (Part #2603)
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IC, MN3009 BBD
IC, MN3009 BBD
$17.95 (Part #1663)
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IC, MN3101 BBD clock driver
IC, MN3101 BBD clock driver
$9.95 (Part #5084)
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Key bushing, rubber
Key bushing, rubber
$0.95 (Part #4327)
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Key return spring
Key return spring
White keys only
$0.75 (Part #KEYSPJ)
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Key return springs, pkg of 10
Key return springs, pkg of 10
Black keys only
$5.95 (Part #KEYSP7)
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Knob, tan, Roland
Knob, tan, Roland
$7.95 (Part #2583)
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Music holder, Roland
Music holder, Roland
$14.95 (Part #7160)
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Nut, black plastic, for phone jack
Nut, black plastic, for phone jack
$1.95 (Part #7166)
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Phone jack, 1/4-inch, 5-pin PCB mount
For Outputs, Pedal, Input
$10.95 (Part #1295)
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Phone jack, 1/4-inch, 9-pin PCB mount
Phone jack, 1/4-inch, 9-pin PCB mount
For Phones
$12.95 (Part #3800)
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Potentiometer, 10KB rotary
For Tune
$9.95 (Part #1347)
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Power switch, rocker type
Power switch, rocker type
$6.95 (Part #4289)
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Slide switch, 3-position
Slide switch, 3-position
For Input and Output Level
$14.95 (Part #1436)
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Speaker, 4.25 inch, Roland
Speaker, 4.25 inch, Roland
$14.95 (Part #7164)
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Style 28W key, black note
Style 28W key, black note
$9.95 (Part #K28WBL)
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Style 28W key, note A
Style 28W key, note A
$10.95 (Part #K28WA)
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Style 28W key, note B or E
Style 28W key, note B or E
$10.95 (Part #K28WBE)
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Style 28W key, note C or F
Style 28W key, note C or F
$10.95 (Part #K28WCF)
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Style 28W key, note D
Style 28W key, note D
$10.95 (Part #K28WD)
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Style 28W key, note G
Style 28W key, note G
$10.95 (Part #K28WG)
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Style 28W key, top G note
$16.95 (Part #K28WGT)
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Transformer, Roland
Transformer, Roland
$44.95 (Part #7165)
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Transistor, 2SA1015
Transistor, 2SA1015
$1.95 (Part #3294)
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Transistor, 2SC1815
Transistor, 2SC1815
$2.95 (Part #1943)
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Transistor, 2SK30A-O
Transistor, 2SK30A-O
$7.95 (Part #2605)
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Voltage regulator, 7815
Voltage regulator, 7815
$3.95 (Part #2321)
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