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#305627 - 04/23/07 03:03 PM "Bouncing" piano keys
frida1 Offline
Full Member

Registered: 09/02/04
Posts: 199
Loc: Pacific Northwest
I've been having a problem with my piano for about 3 months. It's so subtle, that when the tech came to look at it, he couldn't determine anything was wrong--but I promise I'm not crazy. At that time I wasn't able to really define the problem. Now I can (sort of). It seems that sometimes after I hit a key, it will repeat again in a sort of bounce. The repeat movement of the key doesn't go down very far, just barely enough to hear and feel. I doubt that anyone listening would hear it, but I do! It seems to happen on some keys more than others, but not every time on any key. Does anyone have any ideas what might cause this? By the way, it's a Petrof IV that's about 2-1/2 years old and I like it very much. I play it a minimum of 2 hours most days, sometimes up to 4 hours/day.

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#305628 - 04/23/07 03:09 PM Re: "Bouncing" piano keys
BDB Offline
Yikes! 10000 Post Club Member

Registered: 06/07/03
Posts: 24466
Loc: Oakland
If it is just the key, not so much the hammer, it could be that the damper stop rail is too high. Press the key, hold it down, and lift the damper gently. If it lifts more than about 1/16 inch, have your tech check it.
_________________________
Semipro Tech

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#305629 - 04/23/07 03:14 PM Re: "Bouncing" piano keys
frida1 Offline
Full Member

Registered: 09/02/04
Posts: 199
Loc: Pacific Northwest
The tech did check the damper stop rail. It may be that my problem is the hammers, I just don't know enough to know.

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#305630 - 04/24/07 07:22 AM Re: "Bouncing" piano keys
Bob Offline
4000 Post Club Member

Registered: 06/01/01
Posts: 4439
Loc: Florida
Find a good tech to regulate the piano. You should do at least a partial reg every year, given the use your piano gets.
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#305631 - 04/24/07 09:04 AM Re: "Bouncing" piano keys
Monica K. Offline

Platinum Supporter until Dec 31 2012


Registered: 08/10/05
Posts: 18096
Loc: Lexington, Kentucky
Bob, what exactly should we ask our techs to do as regular yearly maintenance? I had my piano regulated last summer; do I just say "do whatever is needed" or is there a more specific list of things I could ask to be done that would make it sound like I knew what I was talking about? In other words, what does a "partial regulation" entail?
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#305632 - 04/24/07 11:09 AM Re: "Bouncing" piano keys
frida1 Offline
Full Member

Registered: 09/02/04
Posts: 199
Loc: Pacific Northwest
The tech I use does do partial regulations; he tends to do some work on the piano along with tuning 1-2 times per year. He says the regulation is good, so that's not the problem.

Any other ideas?

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#305633 - 04/24/07 03:22 PM Re: "Bouncing" piano keys
Glyptodont Offline
Full Member

Registered: 05/19/05
Posts: 377
Loc: Wisconsin
When you say your tech inspected the piano, and probably even played it briefly, but was unable to determine if anything was wrong . . . I presume you were able to describe for him what he was supposed to hear or feel -- but he couldn't?

At least a year ago, a person posted on this forum about a "buzz." No one else could hear the buzz, not even professional technicians. The person was very upset about it.

In that particular instance, reading that posting very carefully, most readers would have to wonder if there really was a buzz at all.

In your instance, are the keys malfunctioning? If another technician comes out, and is unable to detect any problem, you may have to question your judgment on this one.

I wish you well --
_________________________
the Glyptodont

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#305634 - 04/24/07 04:21 PM Re: "Bouncing" piano keys
frida1 Offline
Full Member

Registered: 09/02/04
Posts: 199
Loc: Pacific Northwest
Glyptodont: When the tech came, I really couldn't describe the problem. Now I can, so when he comes again I'll ask him about it. I also thought of having someone else, and figuring that if he/she didn't know what I was talking about, it can't be anything much. In my small town, I'm not sure there is anyone else reliable though, and also I'd feel very bad if the current technician ever found out I had tried someone else.

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#305635 - 04/24/07 04:41 PM Re: "Bouncing" piano keys
Steve Cohen Offline
Yikes! 10000 Post Club Member

Registered: 05/26/01
Posts: 10813
Loc: Maryland/DC/No. VA
I think that it IS a regulation problem. Post your situation in the Piano Technicians Forum.

They will undoubtedly have suggestions!
_________________________
Piano Industry Consultant- http://www.linkedin.com/pub/steve-cohen/6/b92/b80

Consultant & Contributing Editor - Acoustic & Digital Piano Buyer

Jasons Music
Maryland/DC/No. VA
Since 1937.

www.jasonsmusic.com
My postings, unless stated otherwise, are my personal opinions, not those of my clients.

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#305636 - 05/01/07 12:21 PM Re: "Bouncing" piano keys
frida1 Offline
Full Member

Registered: 09/02/04
Posts: 199
Loc: Pacific Northwest
The tech came and fixed the problem. He said the drop screws were too high, and also the repetition levers needed adjustment. Anyway, it's fine now. He charged me $90.00 for the work, which I'm sure was fair (to me, at least).

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