piano disc

[richard.ucci at att.net]

Hi List,
Tuned  a PR gp-142 with a piano disc system today. Last year I installed a Dampp Chaser system in this piano as well. After tuning ,I turned on the piano disc and played a cd. When I was about two minutes into it I hit the stop button and started to pack up.
A very noticable hum was heard comming from what I think was the amp.
It was not there before. Also this piano gets very little use and was sitting dormant for at least six months.
What can I do to fix it?
Rick Ucci/Ucci Piano    
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