Has anyone ever encountered the expanding action bracket issue in Pramberger Signature Series pianos built by Young Chang ? The piano is a PG 150 Serial Y G0128847 according to the Pierce Atlas it would have been built in Inchon, South Korea in 1999. The piano is equipped with a Kurzweil player system which is a company that YC purchased in 1990. The majority of pianos with the bracket issue where built in 1990 thru 1994 but I think there are other outside of this time range that have had expanding brackets.
The red flag to me is the presence of silver brackets. there is no sign of cracks, paint blisters, pieces of brackets. The keys are stiff/hard to play. Damper lift from the key is way too earlier and there is no letoff, no after touch and very weak rep springs, shanks are also resting on the rebound felt. Obviously it is way out of regulation but maybe brackets are a factor or not. I encountered a Piano Disc grand built by YC that had no visible bracket issues but the piano would not regulate. I could not get the action stack out of the keyframe and also noted bubbles in the finish. Perhaps the safe thing here is to get new brackets from YC so there are no surprises.
To get the action out several things need to be done to the Kurzweil sensor wires and a mechanical bar that blocks the hammers so keys can play like a keyboard. The piano tuned up okay but it need help. Easing the balance pin holes and adjusting the damper/key lift , cleaning , polishing, lubricating key pins certainly will help
While I am at it does anyone know much about the Kurzweil player system ? It looks to be in great shape with well built components, speakers, power supply, 3 1/2 inch diskettes and CD player as well as a record strip. It looks a lot like Piano Disc equipment which I am certified in
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James Kelly
Owner- Fur Elise Piano Service
Pawleys Island SC
(843) 325-4357
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