Bonk

[Richard Strang]

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   Thanks for the fast replies. Let off on all problem notes is normal. The
hammers are not blocking and are checking as normal, but the strings do not
ring on the affected notes. It is almost as if the damper is not coming off
the string, but it is and the note can be plucked and it rings. I'm at my
wit's end. All the pianos with the bonk problem have been infested with
termites, but I don't see how that could cause this problem. Thanks again
for the input.


  Richard







   -----Original Message-----

  From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]On
Behalf Of David M. Porritt
  Sent: Saturday, June 14, 2003 4:24 PM
  To: pianotech@ptg.org
  Subject: Re: Bonk


  Are the hammers just blocking on the strings?  What is let-off like?

  dave
  *********** REPLY SEPARATOR ***********

  On 6/14/2003 at 4:12 PM Richard Strang wrote:
    This is Richard Strang, from Panama. I hope this email finds you all in
good health.
       I have ran into several pianos that all have the same problem, which
I believe is caused by something that may require major repairs, but I am at
a loss as to what the real problem is. The problem is this. You can play all
the keys to check all the notes, and you'll come to a section of notes that
won't play. The hammer hits the string, but the only sound it makes is,
BONK! The strings do no resonate as they should. You can pluck the strings,
and they sound okay. You can hold the damper off the strings, but when the
note is played, the only sound it makes is, BONK! It sounds almost as if the
hammer is hitting wood, instead of the string. This is only in a section of
notes, and in the case of the U1 I inspected today, it was a little over an
octave's worth of notes in the upper tenor section, just before the treble
break. All the bass and all the treble was okay.
       Is this a problem with the bridge somehow? I have seen this problem
where only two or three notes are affected, and another piano where the
entire tenor section was dead, and I have had no solution. I feel bad that I
have studied and been in the practice for so long, but have no solution to
this problem. Can someone help me out? Thank you.



     Richard Strang




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_____________________________
David M. Porritt
dporritt@mail.smu.edu
Meadows School of the Arts
Southern Methodist University
Dallas, TX 75275
_____________________________


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