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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