[CAUT] Yamaha Disklavier De-tunes itself

[Ken Zahringer]

Hey, Jeremy,

We have 23 Disklaviers here and I have never noticed anything like this.
Sounds like you may have a power supply problem.  You should call Yamaha
tech support and talk to them about this.  They¹re at 800-854-1569.

Regards,
Ken Z.


On 10/13/07 1:51 PM, "Jeremy Gould" <jeremygould at bsn1.net> wrote:

> List,
> 
> A little over two years ago, the University of Northern Colorado was given a
> gift of a Yamaha C6 Disklavier (well...the school paid for half, but that's
> another story).  Needless to say, the player system was never used.  The piano
> lived in a large classroom/performance space and had weathered it's first two
> years of University life quite well.
> 
> After my resignation last year, our jazz piano faculty requested the piano be
> placed in his studio so that he could make use of all the bells and whistles. 
> So, in August, the piano was placed in his studio.  
> 
> Last week, I get a call saying that he doesn't know what has happened, but his
> piano tuning has gone way south.  So, I go to check it out, and find the
> treble pretty much on target but the entire mid-section has gone really flat. 
> So, as I am preparing to tune I hit my left knee on the console under the
> keybed...ouch!  So, I look down and the player system is on.  I turn it off
> and feel that it is quite warm.  Hmmm...I wonder if the electronics underneath
> are warm too.  Sure enough, thing has an I/O unit (don't ask me what that is)
> mounted directly under the bridge and the thing is downright hot!  I reach my
> fingers up in the 1" space between the soundboard and the unit and sure
> enough, the sound board is quite warm.  So I did a quick tuning and left a
> note saying that the player system is to blame for the wonky tuning, and that
> I'll check if this is a normal issue with these systems and in the meantime,
> leave it turned off when not in use.
> 
> So, is this common?  What do I do to keep the piano from going out of tune
> every time the system is turned on?  Or should I have him leave the thing
> turned on and let the soundboard simmer?  Any advice will be much appreciated.
>  
> Jeremy Gould
> 
-- 
Ken Zahringer, RPT
University of Missouri
School of Music

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