Puzzler for Diagnosticians

Alan Barnard tune4u@earthlink.net
Mon, 6 Feb 2006 19:40:59 -0600


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Conover upright, newish.

Customer complained that the soft pedal didn't seem to work.

Found that the prop stick was not in the hole. Put it in the hole and regulated it.

Tuned the piano. Drove away.

5 minutes later, I get a call on my cell: "Two notes don't work when I press the soft pedal."

Turn around, go back. Sure enough two notes (f3 and g3) don't work unless you hit the keys quite hard.

What was wrong?

Hint (things that were NOT wrong): No hammer interference or any problems with rubbing or interfering parts. No foreign objects. No keystick problems. No loose screws. No flange problems. Nothing broken.

Hint: The fix took one tool and about 30 seconds (after about 3 minutes of professional analysis and diagnosis, i.e., chin scratching, confused wonderment, and blank staring).

Alan Barnard
Salem, Missouri
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