>I am the servicing piano technician for a Hamburg Steinway (D) 9 foot >grand. According to the serial (450690)number it seems to be a 1977. Replaced strings that still buzz ought to indicate that it's not the strings buzzing. These things are easiest to fix if you can first determine the cause before fixing everything it wasn't. Triage first before you operate. Start with the easy stuff on top. Hover over the piano as best you can and listen while someone else pounds on a key that produces a good juicy buzz. Grab everything - everything in the vicinity of where the sound seems to be coming from, and see if it stops. If it stops, you have your hand on the culprit. Look under the plate with an inspection mirror. Feel around under there with a soundboard steel. If that fails to produce anything, and the sound seems to be coming from inside the piano rather than hinge pins or the lid lock, crawl underneath and again, grab everything under there in the vicinity of where the sound seems to be coming from. Eliminate what it's not, and concentrate on what's left until it shows up. Don't assume exotic or low incidence causes until you've exhausted the easy simple things. Odds are, it will be something simple and obvious when you finally find it, so look at the simple and obvious stuff first. Ron N
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