how do you locate a buzz sound?

[TwinkleFingers]

hi, i have a small buzz sound coming from the lowest note in the treble section before the cables cross.  im having trouble locating it.  any suggestions?

[rachfan]

A few possibilities for a grand:

1.  Make sure you're not actually hearing a sympathetic vibration from something outside of the piano such as a vase rattling nearby.

2.  Look at the point where the string crosses the bridge.  Is there a tiny, minute wood chip (i.e., manufacturing debris) lodged under the string?  Use a magnifying glass if necessary to determine that.  If yes, see if you can dislodge it.

3.  Check the lid hinges.  If they are L shaped rods, is the short leg of the L sticking out horizontally away from the piano rather than straight down toward the floor?  If so, push the hinges into the down-pointing position.

4.  If none of the above, call in your technician.  He'll inspect the soundboard to ensure there is no crack in it to account for the buzz, or a wooden rib underneath that has become unglued.  Also, if it turns out to be a string, he'll check  the downbearing.  He may also put a half or full twist on that string to correct the buzz.

5.  Or, he might discover something else entirely.

Good luck!

[TwinkleFingers]

thanks for you help on both topics rachfan!

[rachfan]

My pleasure!