Yamaha Tuning Instability

[Mark Wisner]

Does any part of the piano go sharp?

>>> mfarrel2@tampabay.rr.com 09/23/02 04:24 AM >>>
I agree that you state logic, but the stable microgrand is actually more in the direct path of the AC vent. The Yamaha does not get blown on. The pianos are in her separate studio. It is a former in-law type house. No cooking is done in there, nor are showers taken, so humidity is presumably fairly stable, just varying with outside general directions. As I stated, she will purchase a cheap hygrometer and start monitoring RH. No windows near the Yamaha. The microgrand is next to sliding glass doors that are never opened. No plants in house. No holes in wall. 

All these factors raise my concerns regarding some type of structural condition.

Terry Farrell
  
----- Original Message ----- 
From: <Bigeartb@aol.com>
To: <pianotech@ptg.org>
Sent: Sunday, September 22, 2002 9:52 PM
Subject: Re: Yamaha Tuning Instability


> Terry,
>      I wonder if the Yamaha might be placed near the air conditioning/heating 
> vent or in front of a window where the sun might heat the instrument or a 
> live plant too close to the instrument will cause it to go in and out of 
> tune. I strongly suspect the humidity is changing for this piano. I doubt the 
> pinblock distance from the plate is the problem. Maybe there's a hole in the 
> wall to the outside next to the piano. I don't know but I'll bet this 
> instrument is getting much more moisture than the second piano.
> 
> Tommy Black
> Decatur, Ala.
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