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#651419 - 03/17/08 12:11 PM keys problem?
-paul- Offline
Junior Member

Registered: 03/17/08
Posts: 2
Loc: Dorset, England
'lo all, this is my first message.

A few keys on my upright wont return to their normal position properly.




Can anyone help as to what to do?


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#651420 - 03/17/08 12:21 PM Re: keys problem?
BDB Offline
Yikes! 10000 Post Club Member

Registered: 06/07/03
Posts: 21296
Loc: Oakland
Call a technician to fix it. It may be covered under a warranty, as the piano looks new.
Semipro Tech

#651421 - 03/17/08 12:59 PM Re: keys problem?
tds Offline
Full Member

Registered: 08/30/06
Posts: 446
Loc: Bastrop, Texas
It's possible that one of the center pins in the wippen or jack has worked its way out and is catching on the side of an adjacent hammer.

However, I agree with BDB, you should really call a technician for service, as this probably isn't a fix you can do yourself.
Stay tuned.

Tom Seay, Recovering Piano Technician
Bastrop, Texas

#651422 - 03/17/08 01:35 PM Re: keys problem?
Olek Offline
7000 Post Club Member

Registered: 03/14/08
Posts: 7247
Loc: France
Look to me like a Pianic Polish action, with plastic flanges, they tend to get sluggish in time , probably because of lesser quality center pin)

Is it only the hammer or does is the key too tight (not enough play) That is at 99% a tight center pin problem, you can't do much by yourself out of installing the piano in a dryer place - but it is not that long to correct as long as only a few are concerned.
Problem is if the action have that tendancy, it may be necessary to treat/check all centers, because if only the offending ones are changed or lubricated, or whatevered, and other continue to get sluggish , you will get mad !

What is the brand / model ?(this is useful info to readers) does condition changed recently ? How old is the piano ? Even good brand actions can develop sluggish centers, but some are more prone than others. A guarantee issue , as stated.
Isaac OLEG - http://picasaweb.google.fr/PianoOleg pro

#651423 - 03/17/08 02:34 PM Re: keys problem?
-paul- Offline
Junior Member

Registered: 03/17/08
Posts: 2
Loc: Dorset, England
Thanks for the help as far posted.

The piano was bought second hand around 18 years ago. It's a Zimmerman upright. Model? I don't know, but will find out if told where to look.

I assumed it was something I couldn't sort out my self, but just wanted to make sure.

Thanks again for your input.


#651424 - 03/17/08 02:50 PM Re: keys problem?
Olek Offline
7000 Post Club Member

Registered: 03/14/08
Posts: 7247
Loc: France
Indded a Pianic action ! I win !!!
better check the pinning intensively and correct as many as possible, it can take a few hours.

Sometime using a special lube (CLP) on the bushing may work, but I've find that on those Pianic actions it does not (plastic flanges). so only reaming and using a new center will correct the sluggish centers.

On very worn action, there is also a worn cloth at the low end of the damer blade that can stop hammers as on the picture (the spoon is buried in the cloth) . But your action does not look like it is so worn at first sight.

Is there a change with hammer return when the sustain pedal is engaged ? if these are the centers, you will have more hammers not going back when the pedal is used.

Best Regards. At least you will now what to say to the technician before he comes by.
Isaac OLEG - http://picasaweb.google.fr/PianoOleg pro

#651425 - 03/17/08 04:07 PM Re: keys problem?
Keith Roberts Offline
1000 Post Club Member

Registered: 05/04/04
Posts: 1984
Loc: Murphys, Ca
It looks like the one on the left is rubbing against its neighbor
Keith Roberts
Associate, PTG
Keith's Piano Service
Hathaway Pines,Ca

#651426 - 03/17/08 06:07 PM Re: keys problem?
Artisan Piano Offline
Full Member

Registered: 06/07/07
Posts: 338
In the first and second picture you can see a silvery line going diagonally through the gap between the hammer lift and rest rails.
Is that a spring for the lift rail or a foreign object?

#651427 - 03/18/08 12:34 PM Re: keys problem?
Olek Offline
7000 Post Club Member

Registered: 03/14/08
Posts: 7247
Loc: France
a spring made of a piano wire - special Zimmerman neat solution (you made me wonder !)
Isaac OLEG - http://picasaweb.google.fr/PianoOleg pro


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