Question about Yamaha Full-Size Keyboard
Hi... Larry here. My gut tells me that it is felt bushings under the keys AND the front rail felt strip... any ideas???
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Posted on Jan 02, 2017
DO NOT open the case unless you are aware of and comfortable with the fact that you could _destroy_ your piano. Easily.
Observe appropriate anti-static precautions. It should go without saying that this is an electronic repair, and dangerous voltages may exist inside the case.
1. Remove the stand if you have one
2. Lay the keyboard upside down (bottom up) on workbench
3. Remove all 90+ screws from the bottom of the chassis, including the 14 inside the speaker compartments
4. Carefully lift up on the bottom case part, taking not to damage the speaker lines
5. Unplug speaker connector and set lower case aside
6. LCD is mounted beneath main logic board
9in the center), my problem lies elsewhere, but competent and cautious service technique should lead you where you need. I would strongly recommend replacing the LCD assembly module, unless you are experienced in LCD repair.
Posted on Nov 08, 2009
The part numbers are only available through the Yamaha Corporation. The Service manual, which is available for purchse (note that this is NOT the owner's manual) will have them.
I repaired mine on my own. I used a sticky foam tape of the correct width (approxiately 3/8 wide) and overlaid one layer directly over the original felt pad. I used a white foam tape like is used for carpet or other indoor needs. If I were doing it again I would probably use something just a little thicker and softer than what I used (appx. 1/16 thick).
Disassembling the Clavinova and removing the entire GH88 keyboard for this work is not hard if you are even moderately handy. I had the entire mechanics of the unit laid bare in 45 minutes with no manual (and not one curse word).
I am going to write up a tutorial on this soon as many people have asked about it.
By th way, I have heard that the factory pads are $100. My solution cost me about $3. Even if I have to do it again in a year, it's a win.
Posted on Feb 06, 2011
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