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Digital-piano keys becoming stiff #1665141
04/22/11 10:08 PM
04/22/11 10:08 PM
Joined: Apr 2011
Posts: 30
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PianoBot Offline OP
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PianoBot  Offline OP
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Joined: Apr 2011
Posts: 30
Hi,

I've had my Yamaha P140 digital piano for about four years. Lately, some of the keys have (to varying degrees) begun to feel quite stiff. This is affecting perhaps 10 of the keys in total.

If, for example, I play the A above Middle C lightly, the key normally won't go down, and there will be no sound. I usually have to press this key hard to hear a sound. This is interfering with the playing of soft passages, although it's not such a problem with forte playing.

Note that the stiffness of these problematic keys varies. As mentioned, the A above Middle C is usually very stiff, but occasionally it feels fine and easy to press down. Also, the problematic keys seem to be getting worse (more stiff) over time.

Could anybody suggest what might be the problem here? And is this kind of thing expensive to fix? I thought I'd ask before calling a technician, as it would be handy to have an idea of what's going on before handing over any money.

Regards,
Tom

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Re: Digital-piano keys becoming stiff [Re: PianoBot] #1665178
04/23/11 12:24 AM
04/23/11 12:24 AM
Joined: Nov 2010
Posts: 140
M
Manolios Online content
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Manolios  Online Content
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M

Joined: Nov 2010
Posts: 140
Uh, oh, it doesn't sound good. I experienced an almost identical issue (same A above middle C key and about ten others, same stiffness) with my beloved P120.

The solution/explanation of the problem is that the keys really can go dry over the years and the technician has to put again enough lube ( a special and expensive Yamaha lubricant) on the inside mechanism / moving parts of the action.

They usually charge a general price of up to 300 Euros for this treatment, which I honestly found very expensive.

Hope this helps a bit. I asked a technician back then when I had this issue if I couldn't lube the action for myself, he said I could buy the expensive lube and try it but he doesn't recommend that. Since I'm really lousy at opening and repairing things ( 2 left hands LOL) I decided to go with the Yamaha service.

Last edited by Manolios; 04/23/11 12:25 AM.
Re: Digital-piano keys becoming stiff [Re: PianoBot] #1665189
04/23/11 01:15 AM
04/23/11 01:15 AM
Joined: Sep 2009
Posts: 7,770
Raleigh, North Carolina
MacMacMac Offline
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MacMacMac  Offline
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Joined: Sep 2009
Posts: 7,770
Raleigh, North Carolina
I had that problem with my Clav. A tech came out, did the lube, and all's well. In my case it was just one key. (It was a warranty job.)

By the way ... special Yamaha lubricant?
Would that be "ordinary, run-of-the-mill lubricant" with an expensive Yamaha label? smile

Re: Digital-piano keys becoming stiff [Re: PianoBot] #1665202
04/23/11 02:08 AM
04/23/11 02:08 AM
Joined: Sep 2007
Posts: 14,821
Hamamatsu, Japan
Kawai James Offline
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MacMacMac,

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Re: Digital-piano keys becoming stiff [Re: MacMacMac] #1665205
04/23/11 02:12 AM
04/23/11 02:12 AM
Joined: Nov 2010
Posts: 140
M
Manolios Online content
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Manolios  Online Content
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Joined: Nov 2010
Posts: 140
Originally Posted by MacMacMac
[...]special Yamaha lubricant?
Would that be "ordinary, run-of-the-mill lubricant" with an expensive Yamaha label? smile


Well, LOL, it actually came to my mind to ask about the lube product, but I was told by the Yamaha tech guy to use only the "special Yamaha lube", since any other brand could possibly destroy the sensible mechanism of the action and I fearfully agreed and shut up. blush Anyway, you may be right, but I wouldn't want to risk that, I'm a happy & good user & buyer and always say yes to techs. crazy



Re: Digital-piano keys becoming stiff [Re: PianoBot] #1665239
04/23/11 04:04 AM
04/23/11 04:04 AM
Joined: Jul 2004
Posts: 6,425
Vught, The Netherlands
Dave Horne Offline
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Dave Horne  Offline
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Joined: Jul 2004
Posts: 6,425
Vught, The Netherlands
Tom, if it were my piano, I'd open it up, take it apart and lubricate the beast myself. If it feels better to you to use the ... special Yamaha lubricant, order it from your dealer.

This isn't rocket science. I once had a broken key on my Roland A-80. I called the tech in Belgium and he sent me a part free as I recall. It was no problem as far as they were concerned for me to do the work.

If you feel uncomfortable about doing this yourself, have a friend who is handy lead the surgical procedure. The only problems I've encountered when opening keyboards, figuring out how to unplug the various computer type connectors.

One more thing, the 'Yamaha' techs who people call do not always work directly for Yamaha per se, they have their own repair business and have jumped through hoops to be on Yamaha's list. I haven't always been impressed with their knowledge. (If anyone is interested, send me a PM.)


website | mp3 files | Yamaha AvantGrand N3 | Roland RD 2000 | Sennheiser HD 598 headphones
Re: Digital-piano keys becoming stiff [Re: PianoBot] #1665306
04/23/11 09:36 AM
04/23/11 09:36 AM
Joined: Apr 2011
Posts: 30
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PianoBot Offline OP
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PianoBot  Offline OP
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Joined: Apr 2011
Posts: 30
Hi all,

Thanks for the replies! This appears to be a rather busy forum.

I think I'll give the technician a call and see what he says. It's handy that I now have an idea of what the problem might be. For what it's worth, this technician is a repair person whose contact details I got from a local music shop. As far as I can tell, there is no official Yamaha rep near me.

I was considering taking it apart myself, but, like Manolios, I don't trust my hands here. smile

For the sake of others with similar problems, I'll update this thread once I get a resolution. I see that this thread is currently the first Google-search result for queries such as [digital piano keys stiff].

Regards,
Tom

Re: Digital-piano keys becoming stiff [Re: PianoBot] #1665497
04/23/11 06:23 PM
04/23/11 06:23 PM
Joined: Apr 2006
Posts: 2,583
Pennsylvania
Ken Knapp Offline

2000 Post Club Member
Ken Knapp  Offline

2000 Post Club Member

Joined: Apr 2006
Posts: 2,583
Pennsylvania
A member of the forum had the exact same problem with his Yamaha digital piano last year. He brought it to me and I disassembled it (very easy) and looked it over. The "special" lubricant had indeed dried up. I removed the stiff keys and cleaned them and re-lubricated them with white lithium grease. Put it back together and it played fine. That was last year and as far as I know it is still playing fine. In light of it being a forum member and a chance to visit with him the total cost to him was $20. It was a clp-115.



Ken

Hammond Organ Technician
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