Weird ringing - HELP!!

[Terry Jack]

David,

thanks for the comments!


  Your finger will stop the overring but the damper won't (even when you press on it)?   You didn't mention that in your original post...

  Yes, this is the case

  Never the less it does not compute...on every random note that rings, you can stop the sound "completely?" by pressing on the string with your finger, but you can't press on the damper itself to stop the ringing?   I think we're missing some info here.   



  I am in total agreement with you. It does not compute.

  Overrings in uprights are often bass dampers not doing the job...use a piece of wood with cloth glued to it to mute the bass strings and see what that does...mute off the high treble sections also...if no change check the back scale for missing string braiding...



  I will try your idea you not above

  Get back to us...



  Absolutley!!



  Terry Jack

  David Ilvedson, RPT
  Pacifica, CA 94044





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  Original message
  From: "Terry Jack" 
  To: "Pianotech List" 
  Received: 7/24/2006 8:18:14 PM
  Subject: Re: Weird ringing - HELP!!


  John I am getting sympathetic sounds from the undampend section of the high treble.  

  As I mentioned in my previous post, if I press against the damper itself, nothing is happening to the offending strings, however if I press against the strings with my finger the racket stops.

  Terry Jack
    ----- Original Message ----- 
    From: John M. Formsma 
    To: 'Pianotech List' 
    Sent: Monday, July 24, 2006 7:50 PM
    Subject: RE: Weird ringing - HELP!!


    Sounds like there is a bass string that is sounding sympathetically with some higher strings. After you hear the ringing, try putting your hand on several low bass strings at a time to see if that makes it stop.

     

    If that's it, you'll have to adjust the offending damper(s).

     

    John Formsma

     


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    From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Terry Jack
    Sent: Monday, July 24, 2006 9:37 PM
    To: Pianotech
    Subject: Weird ringing - HELP!!

     

    I have been working on a Farrano Pian Co.  54" upright S/n23990 pre 1910.

     

    At this point it has been tuned. I made the mistake of tuning it 20 cents flat as the customer said she was concerned about it being so old. 

     

    I have also done numerous minor repairs, shaped the hammers, replaced the damper felts and given it a minor regulation.

     

    The piano has developed a strange "after ring" in random notes in the mid treble down into the single bass strings. Even if I press on the new damper felt it continues!

     

    I have checked the damper regulation (timing seems fine, lift ok and if I press on a string the damper follows nicely. I've  done the basic string checks ie, seated at the bridge, bridge pins, checked to see if the sound changes at the capo bar if I gently press a brass rod agains the string sideways etc. The plate is tight to the tuning pin block and the ribs are tight,  I can see no cracks in sound board, nothing has fallen down between the plate and wooden parts front or back. I have removed pictures off the walls, items off nearby tables etc.

     

    I even had a fellow RPT look at this instrument and we can not find the trouble. she did make a couple of recommendations and I have done those. they included checking the spacing of the hammers (again) and gently reshaping the hammers.

     

    I have one thing I am going to try yet. I see no reason not to tune this piano to A440. I have discussed this with the owner. After literally spending all day in her not air conditioned house in this 100 + weather here in Oregon I gave up for the day.

     

    I am totally stumped. sure would appreciate some insite from you guys and gals!!

     

    Terry Jack

    Eugene/Springfield OR chapt PTG

     

     

    "Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming   "WOW -- What a Ride!"
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