Welcome to the Piano World Piano Forums
Over 2.5 million posts about pianos, digital pianos, and all types of keyboard instruments
Join the World's Largest Community of Piano Lovers (it's free)
It's Fun to Play the Piano ... Please Pass It On!

SEARCH
Piano Forums & Piano World
Find a Professional
Our Classified Ads
Find Piano Professionals-

*Piano Dealers - Piano Stores
*Piano Tuners
*Piano Teachers
*Piano Movers
*Piano Restorations
*Piano Manufacturers

Advertise on Piano World

What's Hot!!
Posting Pictures on the Forums
-------------------
Forums RULES & HELP
-------------------
ADVERTISE on Piano World
(125ad)
Piano Life Saver - Dampp Chaser
Dampp Chaser Piano Life Saver
(ad)
Piano Buyer Guide
Piano Buyer Fall 2017
Who's Online Now
65 registered members (Andy001, ando, Alex C, ARpiano, amad23, Beakybird, 17 invisible), 1,206 guests, and 1 spider.
Key: Admin, Global Mod, Mod
(ad)
Estonia Pianos
Estonia Pianos
Quick Links to Useful Piano & Music Resources
Quick Links:
*Advertise On Piano World
*Free Piano Newsletter
*Online Piano Recitals
*Piano Recitals Index
*Piano & Music Accessories
*Live Piano Venues
*Music School Listings
* Buying a Piano
*Buying A Acoustic Piano
*Buying a Digital Piano
*Pianos for Sale
*Sell Your Piano
*How Old is My Piano?
*Directory/Site Map
*Virtual Piano
*Music Word Search
*Piano Videos
*Virtual Piano Chords & Scales
Previous Thread
Next Thread
Print Thread
#1815791 - 12/31/11 08:17 AM Roland Rd300 one Key too loud.  
Joined: Dec 2011
Posts: 9
Mikecanada Offline
Junior Member
Mikecanada  Offline
Junior Member

Joined: Dec 2011
Posts: 9
Hello friends, I have a problem with one key which is consistently too loud, It acts as if Im hitting it harder and quicker than I actually am.
I have seen the good work here where friends have opened up the DPs and exposed the internal workings. Is there a roland site where parts could be ordered from?
Has anyone had this happen ?

Thanks for reading this .

(ad) ROLAND

Click Here

#1815885 - 12/31/11 12:35 PM Re: Roland Rd300 one Key too loud. [Re: Mikecanada]  
Joined: Apr 2007
Posts: 3,540
gvfarns Offline
3000 Post Club Member
gvfarns  Offline
3000 Post Club Member

Joined: Apr 2007
Posts: 3,540
US
I have a key that is quieter than the others on my Kawai. I opened it up and looked for visible problems or obvious ways to adjust it but didn't find any. It looks just like every other key. There is one screw I can adjust that changes the height at which the hammer engages but I'm not sure it's the right thing so for now I'm living with it.

Having said that, if your key is actually outputting velocity 127 it means the rubber part of the sensor needs replacing. On the cheap you can steal one from a note you never play, like the top one on the piano.

Actually, this might fix your current problem as well, but I can't be sure. There is some slight risk in the procedure and you have to be kind of handy.

Last edited by gvfarns; 12/31/11 12:36 PM.
#1815925 - 12/31/11 01:38 PM Re: Roland Rd300 one Key too loud. [Re: Mikecanada]  
Joined: Dec 2009
Posts: 3,302
EssBrace Offline
3000 Post Club Member
EssBrace  Offline
3000 Post Club Member

Joined: Dec 2009
Posts: 3,302
Suffolk, United Kingdom
Mike, is it an original (early '90s) RD-300 or the recent/current RD-300GX/NX? If an original one I think you might struggle getting Roland to help. Someone out there will be able to help you - but probably not Roland.

Good luck,

Steve

#1815994 - 12/31/11 03:43 PM Re: Roland Rd300 one Key too loud. [Re: Mikecanada]  
Joined: Dec 2011
Posts: 9
Mikecanada Offline
Junior Member
Mikecanada  Offline
Junior Member

Joined: Dec 2011
Posts: 9
Thanks for thr replies, its a 300 gx. I agree its most likley the contact point, however just wondering if anyone has attempted a repair/ replacement of this part?

thank you friends.

(ad)
Piano & Music Accessories
piano accessories music gifts tuning and moving equipment
#1816013 - 12/31/11 04:09 PM Re: Roland Rd300 one Key too loud. [Re: Mikecanada]  
Joined: Dec 2011
Posts: 27
tiagor Offline
Full Member
tiagor  Offline
Full Member

Joined: Dec 2011
Posts: 27
Portugal
Hi,

I had this same problem at an F key of my 14 year Orla DP. The key played as if full strength was always applied. I suspect the problem with yours may be the same I had and as gvfarns mentioned the contacts that are used to "sense" the speed at which the key was pressed may be dirty and need some cleaning.
I'm posting the pictures of the disassembly on my Orla on this thread, but since I haven't yet had the time to post the keyboard pics to the thread yet, I'll leave one here(this was on my Orla so it might be slightly different on yours):

[Linked Image]

The photo shows the rubbers removed and all I did was clean the carbon contacts softly with a little alcohol on a cotton swab. If you try to fix it bear in mind it may or may not be an easy operation, depending on how the action of your DP is arranged. Also be sure to do it gently so you won't rip apart a contact

Hope this may be of some help.

Best of luck,

Tiago

#1816040 - 12/31/11 05:08 PM Re: Roland Rd300 one Key too loud. [Re: Mikecanada]  
Joined: Dec 2011
Posts: 9
Mikecanada Offline
Junior Member
Mikecanada  Offline
Junior Member

Joined: Dec 2011
Posts: 9
Thanks Tiagor, yes, i think thats it, good picture.
The pics in the DP exposed section in this forum show a similar contact board in the rd300gx.
Does anyone know if the rubber component runs under all the keys or is sectional?

Cheers

#1816109 - 12/31/11 07:28 PM Re: Roland Rd300 one Key too loud. [Re: Mikecanada]  
Joined: Mar 2007
Posts: 744
LesCharles73 Offline
500 Post Club Member
LesCharles73  Offline
500 Post Club Member

Joined: Mar 2007
Posts: 744
Denton Texas
As you can see, you can't simply steal a contact from an upper note as the PCB is one (or two) long pieces. The rubber component is usually sectioned and can peel off in ~octave increments (though they don't necessarily follow the pattern). Be sure to clean the rubber contact underneath AND the carbon on the PCB, but do so lightly.

The rubber switches generally attach to the PCB using little rubber studs that fir through holes. Peeling them out is easy, but you may want to have a toothpick handy for getting them back in.

Gvfarns - you may have lost the high velocity contact. Seems like people usually lose the low contact first, causing the highest contact to be the only one trigger, sending a 127 velocity reading (it assumes that the lowest contact was already tripped). This may be because the low contact gets used more or pressed harder -- who knows, but I have seen quiet keys, and I think it's basically the same problem. You usually can't see it with the naked eye. You've just gotta clean it up and hope it works (I'd clean all the contacts since you're in there).

Last edited by LesCharles73; 12/31/11 07:33 PM.

Les C Deal




#1816151 - 12/31/11 08:39 PM Re: Roland Rd300 one Key too loud. [Re: Mikecanada]  
Joined: Apr 2007
Posts: 3,540
gvfarns Offline
3000 Post Club Member
gvfarns  Offline
3000 Post Club Member

Joined: Apr 2007
Posts: 3,540
US
If I had lost the second contact, no audible note would be produced (or maybe velocity=0). In my case the velocity produced is maybe 10% lower than expected whether I play loudly or softly. If you just played my piano for 5 minutes you most likely would not notice, but if you are practicing, trying to get scales even, etc. you will notice it.

It's definitely true that you can't easily just take one rubber thing and move it because they are indeed attached (many of them are), however, the person I know who did that cut their rubber strip and moved the good rubber thing down from the top key. YMMV.

Last edited by gvfarns; 12/31/11 08:40 PM.
#1816202 - 12/31/11 10:30 PM Re: Roland Rd300 one Key too loud. [Re: Mikecanada]  
Joined: Dec 2011
Posts: 9
Mikecanada Offline
Junior Member
Mikecanada  Offline
Junior Member

Joined: Dec 2011
Posts: 9
Thank you, that makes a lot of sense.
regarding cleaning the contact points? Im assuming we are dealing with graphite on one side copper on the other.

Cheers.

#1816299 - 01/01/12 04:44 AM Re: Roland Rd300 one Key too loud. [Re: Mikecanada]  
Joined: Mar 2007
Posts: 744
LesCharles73 Offline
500 Post Club Member
LesCharles73  Offline
500 Post Club Member

Joined: Mar 2007
Posts: 744
Denton Texas
Originally Posted by Mikecanada
Thank you, that makes a lot of sense.
regarding cleaning the contact points? Im assuming we are dealing with graphite on one side copper on the other.

Cheers.


I'm not sure what the material is in the contacts. I'm thinking maybe graphite and/or carbon? There isn't any copper - both the contacts in the rubber strip and on the circuit board are black.


Les C Deal




#1816312 - 01/01/12 06:47 AM Re: Roland Rd300 one Key too loud. [Re: LesCharles73]  
Joined: Dec 2011
Posts: 27
tiagor Offline
Full Member
tiagor  Offline
Full Member

Joined: Dec 2011
Posts: 27
Portugal
You probably have carbon on both the silicone buttons and the pcb contacts. Carbon is an electrical conductor so each time you press a key it will short the two small strips of the pcb contacts.
When a contact stops working it has probably either stopped making contact because of leaking silicone oil or the carbon has worn out. In the former all you have to do is carefuly clean it. If the later happened (wear on the carbon attached to the silicone buttons) you can also try to fix it glueing a small and thin aluminum circle to where the carbon should be (being careful to keep approximately the samy thickness as the original carbon was.

#1816321 - 01/01/12 07:30 AM Re: Roland Rd300 one Key too loud. [Re: tiagor]  
Joined: Nov 2010
Posts: 5,270
ando Online content
5000 Post Club Member
ando  Online Content
5000 Post Club Member

Joined: Nov 2010
Posts: 5,270
Melbourne, Australia
Originally Posted by tiagor
If the later happened (wear on the carbon attached to the silicone buttons) you can also try to fix it glueing a small and thin aluminum circle to where the carbon should be (being careful to keep approximately the samy thickness as the original carbon was.


Or get some of this stuff:

[Linked Image]

It's a carbon based paint that you paint onto the worn out carbon pads. I've used it to fix old remote controls. Makes them good as new.

#1816329 - 01/01/12 08:31 AM Re: Roland Rd300 one Key too loud. [Re: Mikecanada]  
Joined: Dec 2011
Posts: 9
Mikecanada Offline
Junior Member
Mikecanada  Offline
Junior Member

Joined: Dec 2011
Posts: 9
Thanks for the valuable info, yes carbon to carbon thats it.
Im wondering now if one of the contacts on the board is dirty to the point that it allowing some current flow without the key even being depressed.
What compound, cleaner can be used safetly on the carbon points, just want to have everthing on hand before I go in.

Cheers

#1816332 - 01/01/12 08:45 AM Re: Roland Rd300 one Key too loud. [Re: Mikecanada]  
Joined: Dec 2011
Posts: 27
tiagor Offline
Full Member
tiagor  Offline
Full Member

Joined: Dec 2011
Posts: 27
Portugal
@Ando: That seems perfect. Didn't know that was available and sure is a better way to fix any wear, unless you want to improve de conductivity where aluminum would be best (can't see why that would be preferable for a DP though).

@Mikecanada: I can't see that happening without the key being depressed unless there is some scrap metal shorting the pcb contacts. For cleaning I'd go with some alcohol as it evaporates rather quickly and dissolves the silicone grease. Just don't use any solvent or the contacts will be history. I'm sure there may be more expensive options though but bear in mind all you want to do is clean the grease smile

#1816336 - 01/01/12 08:49 AM Re: Roland Rd300 one Key too loud. [Re: tiagor]  
Joined: Dec 2011
Posts: 27
tiagor Offline
Full Member
tiagor  Offline
Full Member

Joined: Dec 2011
Posts: 27
Portugal
For completeness sake, this is how the carbon in the silicone buttons look like. Be sure to clean these and the ones at the PCB too.

[Linked Image]

#1816342 - 01/01/12 09:05 AM Re: Roland Rd300 one Key too loud. [Re: Mikecanada]  
Joined: Oct 2010
Posts: 292
SkiPablo Offline
Full Member
SkiPablo  Offline
Full Member

Joined: Oct 2010
Posts: 292
i have the same piano in 76 key form. I've taken it a part a few times. last time I had a key that was too soft. I just the key out and the cleaned the contact, etc. You can take a few out and test just by tapping the contact to see if you got the problem fixed. You could also try swapping the same key on the board with another of same letter. They are all weighted the same.


Yamaha P-250 | Galaxy II Pianos | Galaxy Vintage D | The GIANT | Ravenscroft 275

Moderated by  Piano World 

Piano Acc. & Gift Items in
Piano World's Online Store
In PianoSupplies.com ,(a division of Piano World)
our online store for piano and music gifts and accessories, Digital Piano Dolly, party goods, tuning equipment, piano moving equipment, benches, lamps Caster Cups and more.


Free Shipping* on Jansen Artist Piano Benches, Cocoweb Piano Lamps, Hidrau Hydraulic Piano Benches
(*free shipping within contiguous U.S. only)
(ad)
Pearl River & Ritmuller
Pearl River Pianos
(ad)
Pianoteq
PianoTeq 6 Out now
ad
Pierce Piano Atlas


New Topics - Multiple Forums
Problem with Kawai MP11SE
by Velluth. 12/11/17 02:10 AM
Undesired side effect of great VSTs
by Osho. 12/11/17 12:43 AM
New Mapes IGS wire coils look old!
by synthnut. 12/10/17 11:20 PM
Opinion on wrist/slur motion in a video
by wirecat. 12/10/17 09:45 PM
MP11 or MP11 SE setup
by dpilot83. 12/10/17 09:42 PM
Forum Statistics
Forums44
Topics183,201
Posts2,678,195
Members89,262
Most Online15,252
Mar 21st, 2010
(ad)
Accu-Tuner
Sanderson Accu-Tuner
Check It Out!
There's a lot more to Piano World than just the forums.
Click Here to
Explore The Rest of Piano World!!
Visit our online store for gifts for music lovers


 
Help keep the forums up and running with a donation, any amount is appreciated!
Or by becoming a Subscribing member! Thank-you.
Donate   Subscribe
 
Our Piano Related Classified Ads
| Dealers | Tuners | Lessons | Movers | Restorations | Pianos For Sale | Sell Your Piano |

Advertise on Piano World
| Subscribe | Piano World | PianoSupplies.com | Advertise on Piano World |
| |Contact | Privacy | Legal | About Us | Site Map | Free Newsletter |


copyright 1997 - 2017 Piano World ® all rights reserved
No part of this site may be reproduced without prior written permission
Powered by UBB.threads™ PHP Forum Software 7.6.0