roland d10 keys 10thru15 dead all other funtions are fine. cleaned contacts no change


happyrat1

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Open it up. Possibly a loose or oxidized ribbon connector to the keybed.
 
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happyrat1

Destroyer of Eardrums!!!
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Pull the ribbon connectors and reseat them. Sometimes oxidation is not visible but reseating the contacts wipes them clean.

Otherwise these things are usually attached by octaves, C thru C. As modules.

If there's any integrated circuits physically on the keyboard module also check around the pins of the circuit boards for cracked or missing solder joints.

Basically this is come kind of connectivity problem inside the circuitry of the keyboard. Sometimes it helps to trace the circuit path visually and look for physical damage or faulty assembly.

Electronics repair is like a murder mystery and a jigsaw puzzle all rolled into one :)

Gary
 

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