Hi Brenda, I have not experienced damping problems with the UST-7 which is not to say that it cannot happen. Check the status of the middle pedal as was suggested. Check it's pitch. If it is a non pitch sound it could be dampers or it could be undamped open waste end strings at the bass bridge or other sections of the scale. If it is a high pitched sound it may be coming from the undamped treble strings. Place your hands on bass strings and other areas you might think it is coming from to see if it goes away or if it changes. Move the piano so it points in a different direction and observe the results. Check the condition of the dampers, their alignment to the strings and pluck suspect strings to check their muting. Don't change the dampers unless you are certain that is the source of the sound. Newton
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