Question about Yamaha NP 30 76 Key Lightweight Digital Grand Piano with Touch Response

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When pressing down on a key, it sometimes work, and sometimes doesn't.

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The key contacts are dirty... They are likely conductive rubber pills pressed onto traces on a circuit board. There will be two contacts per key to use for velocity sensing.

Disassemble and clean the black rubber pills that are usually in silicone rubber domes AND the corcuit board traces using ONLY 99% isoprophyl alcohol and QTips. 99% is a bot hard to find so look around for it.

Posted on Oct 14, 2010


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Key contacts are dirty. You will have to service the unit. The contacts (two per key) are conductive rubber "pills" that press down on circuit traces under the keys. Use ONLY 99% isoprophyl alcohol and Q Tips to clean both the black pills in the silicone domes and the circuit traces themselves. Be gentle when doing this. When opening the unit, be careful of all the cables as they are easily damaged.

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1 Answer

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