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Uneven volume across keys - Korg Pa800 Synthesizer

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This is due to dirty key contacts. They are conductive rubber pills pressed onto circuit traces under the keys. There are two per key which measures the velocity and affects the loudness. Clean these ONLY with 99% isoprophyl alcohol and Q tips. Disassembly to do this is very labor intensive. One has to be very careful and if you are not adept at this sort of thing, best to take it to a service shop.

Posted on Mar 30, 2011


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