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#2073975 - 04/30/13 07:23 AM Sheet music stand buzzing badly
Evaldas Offline
Full Member

Registered: 11/02/08
Posts: 111
Loc: Vilnius
Hello smile
I've already posted about my Riga, that I bought a few months ago.
It was tuned in the beginning of February and I'm planning to call the tuner to come and have a look at it either in May or June, because we still sometimes turn the heat on in the house, and as I know your supposed to tune a piano in the spring about 1 month after the heating season is over (also I'm saving my pennies :D)...
Anyways, I already have a long list in mind of things that I want him to have a look at, not sure if I can afford having all things fixed in one visit laugh. But one thing that I can not live any longer with is the buzzing sheet music stand. I've tried loosening the screws, I've tried tightening them, it doesn't help and I'm out of ideas frown. I'll upload pictures later of how it's held in place, because now imageshack seems to be acting up...
And here's a sound sample, I've placed my phone on the stand so you can hear the buzzing very clearly.
https://soundcloud.com/evaldas-savickis/sets/riga-sample
Do you have any suggestions?

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#2074132 - 04/30/13 11:39 AM Re: Sheet music stand buzzing badly [Re: Evaldas]
TunerJeff Offline
Full Member

Registered: 06/22/11
Posts: 450
Loc: Oregon Coast
We really need to SEE the problem.

Buzzing music desks can sometimes be cured with a well-placed piece of felt, sometimes using balance rail bushings to tighten an upright music desk between mounts, or just changing the position of the hinges or twisting the hinge pins slightly.

Lots of ways...but an experienced tech should have no trouble fixing the issue.

Good Luck!
_________________________
Jeffrey T. Hickey, RPT
Oregon Coast Piano Services
TunerJeff440@aol.com

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#2074322 - 04/30/13 03:56 PM Re: Sheet music stand buzzing badly [Re: Evaldas]
Evaldas Offline
Full Member

Registered: 11/02/08
Posts: 111
Loc: Vilnius
Here are the pictures (click to enlarge):

Interesting thing: the issue is almost non-existant when the front panel is taken off (fallboard attached). But I can not play it all the time like this, because there would get a lot of dust on the action etc.

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#2074339 - 04/30/13 04:13 PM Re: Sheet music stand buzzing badly [Re: Evaldas]
Supply Offline
3000 Post Club Member

Registered: 09/11/06
Posts: 3919
Loc: Vancouver Island, BC, Canada
Your first post said the buzzing stemmed from the music desk.

Now you say "the issue is almost non-existant when the front panel is taken off".

In other words, it is still there and does not stem from the music desk, no? Or, there could be several buzzes - one in the music desk/front panel, and something else in the piano.

As Jeff said, a competent technician should be able to take care of that without too much trouble. But then, I have personally not worked on a Riga piano before and my hunch is that there could easily be something unusual going on...
_________________________
Jurgen Goering
Piano Forte Supply
www.pianofortesupply.com

Piattino Caster Cups distributor

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#2074341 - 04/30/13 04:13 PM Re: Sheet music stand buzzing badly [Re: Evaldas]
RonTuner Online   content
1000 Post Club Member

Registered: 01/21/04
Posts: 1618
Loc: Chicagoland
Might be a poly to poly squeak on the back side of the tilt out rack... try a thin piece of cloth/felt held in place by friction when you tilt it down. Does that help?

Does it buzz when it is tilted up?

Maybe find one note that makes the buzz and then experiment with your other hand pressing and pulling - it might even turn out that it's not the stand! Buzzes can be tricky...
_________________________
Piano/instrument technician
www.ronkoval.com
@ronkoval

my piano videos:
http://www.youtube.com/profile_videos?user=drwoodwind


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#2074375 - 04/30/13 04:50 PM Re: Sheet music stand buzzing badly [Re: Evaldas]
Evaldas Offline
Full Member

Registered: 11/02/08
Posts: 111
Loc: Vilnius
Oh, I'm pretty sure that it's the sheet music stand buzzing. I've tried holding the hinges and playing buzzing notes and it does stop, while I'm holding it. Of course I've tried positioning it differently, or pushing the whole stand with my hand toward the piano, but it usually doesn't help or it just temporarily stops and then starts buzzing again. I don't know why it almost doesn't buzz when the front panel is removed, maybe it's because the way the sound is projected... Generally when the stand is tilted up it still buzzes, sometimes it doesn't or does less.
I've tried placing paper towels in the gap between the back of the stand and the fallboard, but that didn't help...

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#2074388 - 04/30/13 05:08 PM Re: Sheet music stand buzzing badly [Re: Evaldas]
Withindale Offline
1000 Post Club Member

Registered: 02/09/11
Posts: 1918
Loc: Suffolk, England
Do both hinges buzz or just one?
_________________________
Ian Russell
Schiedmayer & Soehne, 1925 Model 14, 55" upright
Ibach, 1922 49" upright (project piano)

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#2074394 - 04/30/13 05:16 PM Re: Sheet music stand buzzing badly [Re: Evaldas]
Evaldas Offline
Full Member

Registered: 11/02/08
Posts: 111
Loc: Vilnius
I've just double checked it - both of them are buzzing.

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#2074436 - 04/30/13 06:35 PM Re: Sheet music stand buzzing badly [Re: Evaldas]
Withindale Offline
1000 Post Club Member

Registered: 02/09/11
Posts: 1918
Loc: Suffolk, England
Have you checked the hinge pins as TunerJeff suggested?
_________________________
Ian Russell
Schiedmayer & Soehne, 1925 Model 14, 55" upright
Ibach, 1922 49" upright (project piano)

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#2074764 - 05/01/13 06:06 AM Re: Sheet music stand buzzing badly [Re: Evaldas]
rxd Offline
1000 Post Club Member

Registered: 03/11/09
Posts: 1703
Loc: London, England
Sounds like its buzzing very well.

With an appropriate drift, tap each hinge pin so as to move it no more than a millimeter. This, as a first resort, often cures that kind of problem.


Edited by rxd (05/01/13 07:27 AM)
_________________________
Concert & Recording tuner-tech, London, England.
"in theory, practice and theory are the same thing. In practice, they're not." - Lawrence P. 'Yogi' Berra.

Eschew obfuscation.



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#2074773 - 05/01/13 06:41 AM Re: Sheet music stand buzzing badly [Re: Evaldas]
Olek Online   content
7000 Post Club Member

Registered: 03/14/08
Posts: 7185
Loc: France
Zat iz olso a good tip, thanks - It is also good to have some new ones at hand, they wear,


Edited by Olek (05/01/13 11:40 AM)
_________________________
Isaac OLEG - http://picasaweb.google.fr/PianoOleg pro

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#2074872 - 05/01/13 09:44 AM Re: Sheet music stand buzzing badly [Re: Evaldas]
Maximillyan Online   embarrased
1000 Post Club Member

Registered: 06/12/11
Posts: 1492
Loc: KZ
Originally Posted By: Evaldas

I've tried placing paper towels in the gap between the back of the stand and the fallboard, but that didn't help...

Perhaps this resonance because exfoliated wood panel (planks). It's in resonance with some of the sounds
Я имею небольшое количество пианино "Рига" в моём обслуживании. Допускаю, что возможно отклеилась резонансная дека от футора.Это и явилось причиной дребезжания. Нужно попробовать давить сзади пианино на резонансную деку и при этом другой человек будет проигрывать ноты.


Edited by Maximillyan (05/01/13 09:50 AM)
_________________________
A=440
http://www.donguluk.ucoz.ru/

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#2074906 - 05/01/13 10:14 AM Re: Sheet music stand buzzing badly [Re: Evaldas]
Evaldas Offline
Full Member

Registered: 11/02/08
Posts: 111
Loc: Vilnius
Well that bit in Russian talks about the soundboard being detached and causing a buzz, but it's not my case, because when the fallboard is removed there's no buzzing.

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#2074919 - 05/01/13 10:35 AM Re: Sheet music stand buzzing badly [Re: Evaldas]
Maximillyan Online   embarrased
1000 Post Club Member

Registered: 06/12/11
Posts: 1492
Loc: KZ
Originally Posted By: Evaldas
the fallboard is removed there's no buzzing.

may be loose mounting screws of music stand?
Or the fallboard exfoliated


Edited by Maximillyan (05/01/13 10:39 AM)
_________________________
A=440
http://www.donguluk.ucoz.ru/

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#2074935 - 05/01/13 10:48 AM Re: Sheet music stand buzzing badly [Re: Evaldas]
BDB Online   content
Yikes! 10000 Post Club Member

Registered: 06/07/03
Posts: 21271
Loc: Oakland
Try a little linseed oil on the hinge pins. You do not need to take the pins out. Just put a little where the leaves rub against each other.

Maximillyan: I think that you mean "delaminated," (layers of veneer coming apart), rather than "exfoliated" (material shed from the surface, like dead skin).
_________________________
Semipro Tech

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#2074949 - 05/01/13 11:07 AM Re: Sheet music stand buzzing badly [Re: BDB]
Maximillyan Online   embarrased
1000 Post Club Member

Registered: 06/12/11
Posts: 1492
Loc: KZ
Originally Posted By: BDB
"exfoliated" (material shed from the surface, like dead skin).

Yes,BDB "delaminated",sorry my english
_________________________
A=440
http://www.donguluk.ucoz.ru/

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#2074958 - 05/01/13 11:18 AM Re: Sheet music stand buzzing badly [Re: Evaldas]
Supply Offline
3000 Post Club Member

Registered: 09/11/06
Posts: 3919
Loc: Vancouver Island, BC, Canada
How about inserting a cardboard shim? That seems to be the solution to all problems... laugh
_________________________
Jurgen Goering
Piano Forte Supply
www.pianofortesupply.com

Piattino Caster Cups distributor

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#2074963 - 05/01/13 11:28 AM Re: Sheet music stand buzzing badly [Re: Supply]
Maximillyan Online   embarrased
1000 Post Club Member

Registered: 06/12/11
Posts: 1492
Loc: KZ
Originally Posted By: Supply
That seems to be the solution to all problems... laugh

Corrugated cardboard shim is not appropriate. However, do not speak ironically. Corrugated cardboard shim under the pin established as the only correct method of solving the problem of lose a pin
_________________________
A=440
http://www.donguluk.ucoz.ru/

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#2075049 - 05/01/13 02:10 PM Re: Sheet music stand buzzing badly [Re: Evaldas]
Mark R. Offline
1000 Post Club Member

Registered: 07/31/09
Posts: 1937
Loc: Pretoria, South Africa
If you press against the music shelf, you also apply some pressure to the key cover (fallboard). It could just as well be the hinge of the key cover itself. You said that if you remove the front panel, the buzz is almost gone. This could be because the key cover probably rests in a slightly different position, which could put a different strain on its hinge, eliminating the buzz.

I would remove the music shelf from the key cover [edit: temporarily, that is] to determine whether the buzz is actually in the shelf or its hinges. And carefully tighten all hinge screws, both those of the music shelf and those of the key cover. Fix those that are stripped.


Edited by Mark R. (05/02/13 02:51 AM)
Edit Reason: given in post
_________________________
Autodidact interested in piano technology.

1922 49" Zimmermann, project piano.
1970 44" Ibach, daily music maker.

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#2075418 - 05/02/13 12:31 AM Re: Sheet music stand buzzing badly [Re: Evaldas]
Maximillyan Online   embarrased
1000 Post Club Member

Registered: 06/12/11
Posts: 1492
Loc: KZ
Here sound of piano "Riga". See from 1:37m
http://youtu.be/RhIkcYOdGOI
_________________________
A=440
http://www.donguluk.ucoz.ru/

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