<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE>Re: [CAUT] Yamaha Disklavier De-tunes itself</TITLE>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.6000.16544" name=GENERATOR></HEAD>
<BODY>
<DIV><SPAN class=343081214-15102007><FONT face="Comic Sans MS" color=#0000ff
size=2>So, are the power supplies not supposed to be noticeably warm if the
system is in standby mode? </FONT></SPAN></DIV>
<DIV><SPAN class=343081214-15102007><FONT face="Comic Sans MS" color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=343081214-15102007><FONT face="Comic Sans MS" color=#0000ff
size=2>Like Jeremy, I have run into a grand that seems to untune itself,
particularly in the mid-section, and had wondered if the heat generated by the
power supply could be to blame. If the system had
been playing, I could understand why it was so warm -- but in standby,
I would expect it to be cool.</FONT></SPAN></DIV>
<DIV><SPAN class=343081214-15102007><FONT face="Comic Sans MS" color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=343081214-15102007><FONT face="Comic Sans MS" color=#0000ff
size=2>Thanks,</FONT></SPAN></DIV>
<DIV><SPAN class=343081214-15102007><FONT face="Comic Sans MS" color=#0000ff
size=2>Annie Grieshop </FONT></SPAN></DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> Ken Zahringer
[mailto:ZahringerK@missouri.edu]<BR><B>Sent:</B> Monday, October 15, 2007 8:27
AM<BR><B>To:</B> College and University Technicians<BR><B>Subject:</B> Re:
[CAUT] Yamaha Disklavier De-tunes itself<BR><BR></FONT></DIV><FONT
face=Garamond><SPAN style="FONT-SIZE: 14px">Hey, Jeremy,<BR><BR>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. They’re at
800-854-1569.<BR><BR>Regards,<BR>Ken Z.<BR><BR><BR>On 10/13/07 1:51 PM,
"Jeremy Gould" <jeremygould@bsn1.net> wrote:<BR><BR></SPAN></FONT>
<BLOCKQUOTE><FONT face=Garamond><SPAN style="FONT-SIZE: 14px">List,<BR><BR>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.<BR><BR>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. <BR><BR>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.<BR><BR>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.<BR> <BR></SPAN><FONT size=2><SPAN
style="FONT-SIZE: 12px">Jeremy Gould<BR></SPAN></FONT><SPAN
style="FONT-SIZE: 14px"><BR></SPAN></FONT></BLOCKQUOTE><FONT
face=Garamond><SPAN style="FONT-SIZE: 14px">-- <BR>Ken Zahringer,
RPT<BR>University of Missouri<BR>School of
Music<BR></BLOCKQUOTE></SPAN></FONT></BODY></HTML>