[pianotech] U1 - stained bass strings

[David Love]

Not necessarily, could be contamination of the string in the factory not
necessarily the copper before the string was made.  Likely a spill in the
piano would show up on other parts of the piano: plate, action, hammers,
dampers etc.  At any rate, the point as far as Yamaha is concerned is that I
seriously doubt that this occurred in the customers home due to acid rain an
atmospheric disturbance or global warming.  Most likely some type of
handling issue from the factory and if it qualifies as a warranty item then
the strings should be replaced.  Cleaning won't work.

David Love
www.davidlovepianos.com


-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Bruce Browning - The Piano Tuner
Sent: Monday, October 19, 2009 2:54 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] U1 - stained bass strings

Al,
Contamination of copper wire in factory would wrap completely around the
string, not just on one side as viewed. More likely a spill of some sort.
Bruce Browning
The Piano Tuner.


>   I don't think it's from moisture or atmospheric contamination.  It's
> some contaminant that probably occurred in the handling of the strings
> in the factory or during the making of the strings themselves with the
> copper wrap.  I doubt it will effect string wear or breakage (or tone).
> However, putting alcohol on there certainly can.  If it really bothers
> the owner call the dealer and tell them, maybe it's a warranty item.
> Other than that, leave it alone, you can only make it worse.