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How to I get access to the inside of a Roland HP1700L digital piano?

Nothing so far. I do not want to damage anything. I just want to clean the insides of the instrument.

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George, I would recommend getting a tech to do this one- a Roland is an expensive instrument, and I would seriously rather someone else was to blame if something happened! :)

Posted on Nov 27, 2014

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Posted on Jan 02, 2017

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  • 5603 Answers

SOURCE: It's a Roland HP-7e digital piano about three years old.

You may need to clean the contacts which are usually conductive rubber. I explained stuff for another Roland problem with two keys that were intermittent. I have an EP-7 that I had to do the cleaning of the key contacts. Use 91 or 99 % Isoprophyl alcohol to clean BOTH the conductive "pill" (Black under silicone rubber domes) AND the traces on the board where they press. Clean gently as the traces have a hard black coating.

Posted on Jul 29, 2009

  • 1137 Answers

SOURCE: Have a HP 1700 Roland Digital Piano that has one

It sounds as if the membrane under the key needs to be replaced. It can be done with some careful work yourself but you might want to consider having it serviced by a Roland dealer as apparently the parts are becoming scarce. Hope this helps.

Posted on Aug 20, 2009

  • 5603 Answers

SOURCE: I have a Roland HP 2e digital piano - Foot pedal problem

The ROLAND pianos USUALLY require that you use a normally closed sustain pedal.

MANY pedals are the opposite and close when pressed. SOMETIMES you can open the pedal and reverse the way the switch works.

Posted on Oct 06, 2009

  • 1137 Answers

SOURCE: Roland KR-5500 digital piano

Unless you are skilled at electronics troubleshooting, you would probably be better off taking it in to be repaired. It might be the power transformer or a filter capacitor or a number of other things. The problem may not even be visible. You will definitely need a schematic and some test equipment. Try this site:http://www.vintageplanet.nl/ or this site:http://www.rangeraudio.com/stock16.htm

Posted on Oct 18, 2009

  • 5603 Answers

SOURCE: I have a Roland HP 101 digital piano however certain dont sound

White spirit is NOT what you should use. Mineral spirit leaves a residue film.

Use 99% isoprophyl alcohol.

ALSO inspect the contactboard for cracks by candeling with bright light behind it.

Posted on Nov 01, 2009

Testimonial: "bur isnt it strange that certain keys have stopped working? ie most the A keys"

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CDP100 CASIO PIANO VOLUME CONTROL SCRATCHY. UNABLE TO ACCESS THE POTENTIOMETER. PL HELP


Try this first with the piano off, run the control from stop to stop rapidly several times. The object is to clean off any dust deposits and shine the contacts inside the pot. If the pot is not damaged beyond repair, then this should fix it.

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Are the currently manufactured Roland Home Piano series pedal assemblies compatible with the Roland HP237?


This wish an after market pedal, or the original 3's connector? If the keyboard is on when you plug and unplug that, it is likely due to a voltage reference getting confused. Usually when you get constant sustain then most likely a switch is stuck closed, or open, down there in the pedal. How these things work normally is that a pliable switch is opened, for sustain, or closed. It depends on the keyboard. Some keyboards have a setting inside them to accommodate both types of pedals, and some pedals have a switch to choose either. Your keyboard does not have a setting that I can tell, other than adjustments for a resonance option (nice feature). I am not sure the newer RPU-3 pedal is compatible, it seems to be for the newer models. If you are handy with a volt meter, then can check the cable's pins for a common, then a pin that changes with each pedal (use continuity mode, beeps when circuit is closed). Could be a piece of dust is in there, or hair or carpet stuff, and a good cleaning would fix that from blocking the normal function. Manual Link: http://media.rolandus.com/manuals/HP-237_OM.pdf

Aug 02, 2014 | Roland Hp337 Digital Piano

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Keys on yamaha digital piano are sounding more than one note at a time how can i fix this?


The keypads can develop dirt , failure of pads which can result in such malfunctioning. If you are able to open the piano then carefully remove the keypads , clean the surface and reset.
this must solve the issue unless the pads/springs/mechanism are having fault.

Jul 05, 2011 | Roland Hp337 Digital Piano

1 Answer

My gf has a roland hp1500 digital piano but the pedals arnt working. Im trying to fix it while she is away. I am a security engineer and have access to and can use a test meter amd am confident about...


I you mean the sustain type pedals, FIRST check the connector(s) as they often come loose or unseated. Next check for a broken pin in the connectors. It is UNLIKELY you could troubleshoot anything inside with just a meter. It appears that some of the Roland pedals receive 5 volts in the connector, and upon contact closure the voltage is sent back to the piano where it drives C4570 buffers with 680K to ground and an RF bypass cap and series 330 ohm to the + of the C4570's. The circuit I have is for a different piano but if yours uses the 8 pin connector it is likely the same.
The contact is actually optical interrupter modules with a driver transistor. There are threshold setting pots in the pedal assembly as well. The farthest I would suggest you go is to make sure the optical interrupter modules are free of dust if this is the type you have,.

May 28, 2011 | Music

1 Answer

I have a Roland HP 101 digital piano however certain dont sound


White spirit is NOT what you should use. Mineral spirit leaves a residue film.

Use 99% isoprophyl alcohol.

ALSO inspect the contactboard for cracks by candeling with bright light behind it.

Oct 31, 2009 | Yamaha NP 30 76 Key Lightweight Digital...

1 Answer

I have a Roland HP 2e digital piano - Foot pedal problem


The ROLAND pianos USUALLY require that you use a normally closed sustain pedal.

MANY pedals are the opposite and close when pressed. SOMETIMES you can open the pedal and reverse the way the switch works.

Oct 05, 2009 | Roland Music

1 Answer

I need a service manual for Roland FP8 piano, or..


Did you ever get hold of an FP-8 service manual? The weight replacement is relatively simple: The case opens by removal of eight screws, four at each end on the underside. The top then hinges up. Keyboard assembly is removed by first unplugging the two white ribbon connectors at the center, then removing the screws at the front edge (underneath) and the screws (gold) at the back of the assembly (accessible from the top). Keys pop out by spreading the two "wings" at the pivot point, and then the weights (Roland calls them "hammers") lift out. Roland will sell you new ones, but I have no idea whether the replacements are any better than the originals. I've done two of these pianos so far, and have a third waiting to be worked on. I do have a service manual, but I think I downloaded it freebee somewhere.
The other failure mode on this piano is the electolytic coupling caps on the output board - I've replaced all of them on both pianos - don't remember the value offhand.
Paul Prestopino presto11@verizon.net

Sep 21, 2009 | Music

1 Answer

What type of sustain pedal Roland EP-90 digital piano is using - open or closed at rest?


CLOSED is typical for Roland pianos when at rest. (open to sustain).

Note that the jack PROBABLY has a grounding contact so when no pedal is used/plugged in, the jack is shorted at the piano.

Sep 19, 2009 | Music

1 Answer

It's a Roland HP-7e digital piano about three years old.


You may need to clean the contacts which are usually conductive rubber. I explained stuff for another Roland problem with two keys that were intermittent. I have an EP-7 that I had to do the cleaning of the key contacts. Use 91 or 99 % Isoprophyl alcohol to clean BOTH the conductive "pill" (Black under silicone rubber domes) AND the traces on the board where they press. Clean gently as the traces have a hard black coating.

Jul 26, 2009 | Roland Music

1 Answer

Roland 3000 Digital Piano 88-Key Full-size weighted keyboard


It's not really for the faint of heart, but generally this is caused by gunk getting into the key circutry. Underlying the 3000's keyboard is a silicone pad with 2 contacts on it, the measurement between each being hit is the issue usually but yours just sounds like there's something in there causing a physical or contact obstruction.

What you really want to do is to remove the keys and clean everything but this isn't easy... You could try using 99% alcohol (from a pharmacy) to clean inside it which may well help you.

There's a good thread on a similar issue at:

http://www.electronicspoint.com/roland-hp-3000s-digital-piano-dodgy-note-t18946.html

Which may help you work out how to do the disassembly if you are brave, but I would start with pouring some alcohol in and poking it and hoping for the best 1st. It sounds crude, but it works amazingly well with some things.

Dec 29, 2008 | Yamaha NP 30 76 Key Lightweight Digital...

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