Keys stick down after being played.
I have cleaned, vacuumed, blown air throught he keys, etc. now change.
I have taken the keyboard apart down as deep as possible and cleaned again, the keys still...
The key is to open the unit and find the exact point these are sticking. It is unlikely that vacuuming and blowing is going to improve the situation. Often the sticking is due to deformation of the case at the front draging the keys... This would be very obvious and I am sure you would have seen it and found this if it were the problem. It is not clear exactly which type of key mechanism is used here. I have several keyboard with various mechanisms. Some of the weighted ones are actually made by a single company and used by Yamaha, Korg, and several others. These are rather complex and probably not like yours. Others use a silicone rubber dome with conductive rubber contacts that press against circuit traces... for these, the restoring force is actually from the rubber dome. If the domes wear or deteriorate, then keys will not come back up. Yet another type uses a spring at the back end...M Audio uses this lightweight in some of their products.
In your case, I would look for a pivot point that might need lubricating. I was unable to find a service manual for the NP30 that would show the exact type key. I have several Yamaha keyboards that have several types of keys.
If the keys may be dragging on the side, clean with Q tips... and then you can wipe with a Q tip moistened with CRC226 available at Home Depot in the electrical dept. This is a safe lubricant for electrical uses.
Nov 20, 2010 |
Yamaha NP 30 76 Key Lightweight Digital...