Recently I have noticed that the "A" key above the middle "C" sometimes has a heavier action than the other keys. This becomes very noticeable when I depress the key in rapid succession, such as when used as part of a trill. The key then becomes noticably more heavy, making the trill progressively more difficult to impossible to articulate. After this, the key sometimes returns to normal. This is obviously unacceptable, especially because I mainly play classical piano, which involves delicate keywork. Sometimes the key returns to normal, only for it to feel heavy again, usually after depressing it before. This problem also exists to a lesser degree on the "B" key next to it. I see from internet research that this is a common problem with Yamaha keyboards. Some suggest that it is a latent defect, something to do with the polymer used in the keys themselves that resulted in the "pivot point" at the rear of the key deteriorating.
Has anybody got any advice of suggestions about this problem?
Sincerely,
Tristan.

Edited by Tristan Jove (25/06/12 11:29 AM)

If the CP300 is the same vintage as my CP200 (about 10yrs old?) then I think the keybeds for that range of Yammys are known to have this problem. Google "yamaha sticky keys" and see what you get.

Yamaha seem to acknowledge this and some folk have had success in having the entire keybed replaced. I just take it apart, swap the keys around and/or give them a good wiggle But then the CP200 is my gigging 'board that gets pretty poorly treated anyway!

I've been using the CP300 for years and it has seen a lot of action. I noticed a deterioration in the smoothness of the action recently and certain keys had definitely become sticky to me. I spoke to Yamaha and the service department invited me to bring it in to them even though it was way out of its guarantee. The non player tech said he could not feel a defined problem but did try to help. They ordered me some of this white lubrication cream thinking that this would/could help. They showed me how to take keys out and this was actually pretty easy. It is now usable to my mind again having applied the cream. I am wondering about changing/upgrading now though...! I do love the action and sound of the Roland V Piano. it's just a shame it's so big and expensive !

Quote Matt_Moose:

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If the CP300 is the same vintage as my CP200 (about 10yrs old?) then I think the keybeds for that range of Yammys are known to have this problem. Google "yamaha sticky keys" and see what you get.

Yamaha seem to acknowledge this and some folk have had success in having the entire keybed replaced. I just take it apart, swap the keys around and/or give them a good wiggle But then the CP200 is my gigging 'board that gets pretty poorly treated anyway!

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For the Motif 8, here is a wonderful step-by-step on how to change out a broken/sticky key:

http://www.youtube.com/watch?v=4kuIi4s5rSw

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Alexis -Cubase 6.5.0/SX3.1.1.944, XP SP2, 4GB RAM (1GB not accessible, but used just to balance the computer so it doesn't tip over); Delta 66 in Omni i/O Studio; Motif8; UAD-1

thanks for that you tube link ALEXIS.
looks like the Motif has the same keybed as my old yamaha P100
and I now know how to remove the keys.
Thanks again