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Noisy key return w/ QRS system

  • 1.  Noisy key return w/ QRS system

    Registered Piano Technician
    Posted 25 days ago
    Hello everyone,

    I have a Yamaha G1 retrofitted with a QRS system many years ago and when one plays and the returns it clicks on the solenoid.
    Is there something I can do to get rid of the clicking sound? It sounds like the key is hitting a piece of wood almost and one cannot get away with it by just living with it.
    Of course I am trying to think of a simple quick solution but I am not experienced it the player systems.

    Thank you

    Victor Belager
    Belmont, MA


  • 2.  RE: Noisy key return w/ QRS system

    Member
    Posted 25 days ago
    Is there a felt pad on the bottom of the keystick at the plunger?

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    Regards,

    Jon Page
    mailto:jonpage@comcast.net
    http://www.pianocapecod.com
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  • 3.  RE: Noisy key return w/ QRS system

    Member
    Posted 25 days ago
    I suggest you contact QRS/Pianomation and/or contact someone in your area who is certified in QRS/Pianomation installs and repairs. Depending on the age of the system it may need software updates, recalibration, action regulation, new pads or solenoid tips. Its not always possible to get all of the noise out and as systems are played they beat on felts etc. You should have the model and serial numbers off the player unit and processor box when you talk to anyone and you should also test the system fully to make sure it plays properly. Over time the felts in these systems get compacted and noisy including front key pin punchings.

    Depending on the age of the system you may need a test box known as the knob box

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    James Kelly
    Owner- Fur Elise Piano Service
    Pawleys Island SC
    843-325-4357
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  • 4.  RE: Noisy key return w/ QRS system

    Registered Piano Technician
    Posted 24 days ago
    The system is at least 15 years old and I am not sure if it can get an upgrade but I will contact them.
    Thank you.

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    Victor Belanger
    Belmont, MA
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  • 5.  RE: Noisy key return w/ QRS system

    Registered Piano Technician
    Posted 24 days ago
    No there no felt pads

    Thanks.

    Victor

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    Victor Belanger
    Belmont, MA
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  • 6.  RE: Noisy key return w/ QRS system

    Registered Piano Technician
    Posted 25 days ago
    Hi Victor.  If I'm not mistaken, this noise is occurring as you play the piano manually.  There's supposed to be a 1mm clearance between the under key felt and the plunger tip as I recall.

    If plunger tips are getting hard with age that may be where the noise is coming from.  As Jon suggested, there's supposed to be a felt pad between the under side of the key and the plunger.  If the rubber tips are getting hard they may be clicking on the metal push rod of the plunger.

    If the player is no longer used, have a QRS player technician lower the mechanism sufficiently so as to clear the keys enough to eliminate the noise.  This can be done inside the enclosure.  You could accomplish this yourself .......  it's not that involved.

    Lar

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    Larry Fisher
    Owner, Chief Grunt, Head Hosehead
    Vancouver WA
    503-310-6965
    Working the gravy zone for the rest of my days.
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  • 7.  RE: Noisy key return w/ QRS system

    Registered Piano Technician
    Posted 24 days ago
    Thank you Larry. I might investigate how I can do that.
    Victor Belanger
    Belmont, MA

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    Victor Belanger
    Belmont, MA
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  • 8.  RE: Noisy key return w/ QRS system

    Registered Piano Technician
    Posted 24 days ago
    The entire solenoid rail is suspended from the underside of the keybed by two brackets.  It weighs quite a bit.  The brackets are slotted so as to facilitate this adjustment.  Um .........  3/8ths hex head I think.  My knee is just high enough to hold the assembly as I make this adjustment one side at a time.  TAking the pedal lyre out of the way makes things a lot easier.  Now days I have to wait until I'm IN THE RIGHT MOOD to tackle this job.  Good luck.

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    Larry Fisher
    Owner, Chief Grunt, Head Hosehead
    Vancouver WA
    503-310-6965
    Working the gravy zone for the rest of my days.
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  • 9.  RE: Noisy key return w/ QRS system

    Registered Piano Technician
    Posted 23 days ago
    Thank you Larry.


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    Victor Belanger
    Belmont, MA
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